The number 67442
67442 is a composite number with 4 divisors. Its prime factorisation is 2 × 33721. Divisors (4): 1, 2, 33721, 67442.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 67442: a semiprime: 2 × 33721, the product of two primes.
- 2
67442 is composite. Its prime factorisation is
- 3
The divisors add up to 101166; without 67442 itself that is 33724, so 67442 is deficient (33724 is less than 67442). Euler's totient φ(67442) = 33720 numbers up to 67442 share no factor with it.
- 4
The digits of 67442 add up to 23, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 60 steps to reach 1.
LaTeX source of the formulas on this page
\[ 67442 = 2 \times 33721 \]
67442 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 101166 |
| Euler totient φ(n) | 33720 |
| Square | 4548423364 |
| Cube | 306754768514888 |
| Square root | 259.695976 |
| Digit sum / digital root | 23 / 5 |
| Collatz steps to 1 | 60 |
| Scientific notation | 6.7442 × |
67442 in other forms
| Form | Value |
|---|---|
| In words | sixty-seven thousand four hundred and forty-two |
| Binary (base 2) | 10000011101110010 |
| Octal (base 8) | 203562 |
| Hexadecimal (base 16) | 10772 |
| Base 3 | 10102111212 |
| As time | 67442 seconds = 18 h 44 min 2 s |
Is 67442 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (67442 ÷ 2 = 33721) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 2) | 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 2) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 4) | 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 2) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 5) | 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 1) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 2) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 67442 a prime number?
No. 67442 = 2 × 33721, so it is divisible by 2.
What are the factors of 67442?
1, 2, 33721, 67442.
What is 67442 in binary?
10000011101110010 (hexadecimal 10772, octal 203562).
What is the square root of 67442?
About 259.6960.
Is 67442 divisible by 3?
No. Its digits add up to 23, which is not a multiple of 3.
What is special about the number 67442?
67442 is a semiprime: 2 × 33721, the product of two primes.