The number 62642
62642 is a composite number with 4 divisors. Its prime factorisation is 2 × 31321. Divisors (4): 1, 2, 31321, 62642.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 62642: a semiprime: 2 × 31321, the product of two primes.
- 2
62642 is composite. Its prime factorisation is
- 3
The divisors add up to 93966; without 62642 itself that is 31324, so 62642 is deficient (31324 is less than 62642). Euler's totient φ(62642) = 31320 numbers up to 62642 share no factor with it.
- 4
The digits of 62642 add up to 20, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 86 steps to reach 1.
LaTeX source of the formulas on this page
\[ 62642 = 2 \times 31321 \]
62642 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 93966 |
| Euler totient φ(n) | 31320 |
| Square | 3924020164 |
| Cube | 245808471113288 |
| Square root | 250.283839 |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 86 |
| Scientific notation | 6.2642 × |
62642 in other forms
| Form | Value |
|---|---|
| In words | sixty-two thousand six hundred and forty-two |
| Binary (base 2) | 1111010010110010 |
| Octal (base 8) | 172262 |
| Hexadecimal (base 16) | F4B2 |
| Base 3 | 10011221002 |
| As time | 62642 seconds = 17 h 24 min 2 s |
Is 62642 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (62642 ÷ 2 = 31321) | 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 6) | 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 2) | 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 2) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 62642 a prime number?
No. 62642 = 2 × 31321, so it is divisible by 2.
What are the factors of 62642?
1, 2, 31321, 62642.
What is 62642 in binary?
1111010010110010 (hexadecimal F4B2, octal 172262).
What is the square root of 62642?
About 250.2838.
Is 62642 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 62642?
62642 is a semiprime: 2 × 31321, the product of two primes.