The number 67942
67942 is a composite number with 16 divisors. Its prime factorisation is 2 × 7 × 23 × 211. Divisors (16): 1, 2, 7, 14, 23, 46, 161, 211, 322, 422, 1477, 2954, 4853, 9706, 33971, 67942.
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How to work it out
- 1
67942 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
67942 is composite. Its prime factorisation is
- 3
The divisors add up to 122112; without 67942 itself that is 54170, so 67942 is deficient (54170 is less than 67942). Euler's totient φ(67942) = 27720 numbers up to 67942 share no factor with it.
- 4
The digits of 67942 add up to 28, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 112 steps to reach 1.
LaTeX source of the formulas on this page
\[ 67942 = 2 \times 7 \times 23 \times 211 \]
67942 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 122112 |
| Euler totient φ(n) | 27720 |
| Square | 4616115364 |
| Cube | 313628110060888 |
| Square root | 260.656863 |
| Digit sum / digital root | 28 / 1 |
| Collatz steps to 1 | 112 |
| Scientific notation | 6.7942 × |
67942 in other forms
| Form | Value |
|---|---|
| In words | sixty-seven thousand nine hundred and forty-two |
| Binary (base 2) | 10000100101100110 |
| Octal (base 8) | 204546 |
| Hexadecimal (base 16) | 10966 |
| Base 3 | 10110012101 |
| As time | 67942 seconds = 18 h 52 min 22 s |
Is 67942 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (67942 ÷ 2 = 33971) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 1) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 2) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 2) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 4) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | Yes (67942 ÷ 7 = 9706) | A number is divisible by 7 if double the last digit and subtract it from the rest: the result is a multiple of 7. |
| 8 | No (remainder 6) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 1) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 2) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 6) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 67942 a prime number?
No. 67942 = 2 × 7 × 23 × 211, so it is divisible by 2.
What are the factors of 67942?
1, 2, 7, 14, 23, 46, 161, 211, 322, 422, 1477, 2954, 4853, 9706, 33971, 67942.
What is 67942 in binary?
10000100101100110 (hexadecimal 10966, octal 204546).
What is the square root of 67942?
About 260.6569.
Is 67942 divisible by 3?
No. Its digits add up to 28, which is not a multiple of 3.
What is special about the number 67942?
It is a composite number with 16 divisors.