The number 76942
76942 is a composite number with 16 divisors. Its prime factorisation is 2 × 17 × 31 × 73. Divisors (16): 1, 2, 17, 31, 34, 62, 73, 146, 527, 1054, 1241, 2263, 2482, 4526, 38471, 76942.
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How to work it out
- 1
76942 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
76942 is composite. Its prime factorisation is
- 3
The divisors add up to 127872; without 76942 itself that is 50930, so 76942 is deficient (50930 is less than 76942). Euler's totient φ(76942) = 34560 numbers up to 76942 share no factor with it.
- 4
The digits of 76942 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 81 steps to reach 1.
LaTeX source of the formulas on this page
\[ 76942 = 2 \times 17 \times 31 \times 73 \]
76942 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 127872 |
| Euler totient φ(n) | 34560 |
| Square | 5920071364 |
| Cube | 455502130888888 |
| Square root | 277.384210 |
| Digit sum / digital root | 28 / 1 |
| Collatz steps to 1 | 81 |
| Scientific notation | 7.6942 × |
76942 in other forms
| Form | Value |
|---|---|
| In words | seventy-six thousand nine hundred and forty-two |
| Binary (base 2) | 10010110010001110 |
| Octal (base 8) | 226216 |
| Hexadecimal (base 16) | 12C8E |
| Base 3 | 10220112201 |
| As time | 76942 seconds = 21 h 22 min 22 s |
Is 76942 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (76942 ÷ 2 = 38471) | 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 | No (remainder 5) | 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 8) | 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 76942 a prime number?
No. 76942 = 2 × 17 × 31 × 73, so it is divisible by 2.
What are the factors of 76942?
1, 2, 17, 31, 34, 62, 73, 146, 527, 1054, 1241, 2263, 2482, 4526, 38471, 76942.
What is 76942 in binary?
10010110010001110 (hexadecimal 12C8E, octal 226216).
What is the square root of 76942?
About 277.3842.
Is 76942 divisible by 3?
No. Its digits add up to 28, which is not a multiple of 3.
What is special about the number 76942?
It is a composite number with 16 divisors.