The number 42626
42626 is a composite number with 4 divisors. Its prime factorisation is 2 × 21313. Divisors (4): 1, 2, 21313, 42626.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 42626: a semiprime: 2 × 21313, the product of two primes.
- 2
42626 is composite. Its prime factorisation is
- 3
The divisors add up to 63942; without 42626 itself that is 21316, so 42626 is deficient (21316 is less than 42626). Euler's totient φ(42626) = 21312 numbers up to 42626 share no factor with it.
- 4
The digits of 42626 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 57 steps to reach 1.
LaTeX source of the formulas on this page
\[ 42626 = 2 \times 21313 \]
42626 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 63942 |
| Euler totient φ(n) | 21312 |
| Square | 1816975876 |
| Cube | 77450413690376 |
| Square root | 206.460650 |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 57 |
| Scientific notation | 4.2626 × |
42626 in other forms
| Form | Value |
|---|---|
| In words | forty-two thousand six hundred and twenty-six |
| Binary (base 2) | 1010011010000010 |
| Octal (base 8) | 123202 |
| Hexadecimal (base 16) | A682 |
| Base 3 | 2011110202 |
| As time | 42626 seconds = 11 h 50 min 26 s |
Is 42626 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (42626 ÷ 2 = 21313) | 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 1) | 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 3) | 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 6) | 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 42626 a prime number?
No. 42626 = 2 × 21313, so it is divisible by 2.
What are the factors of 42626?
1, 2, 21313, 42626.
What is 42626 in binary?
1010011010000010 (hexadecimal A682, octal 123202).
What is the square root of 42626?
About 206.4607.
Is 42626 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 42626?
42626 is a semiprime: 2 × 21313, the product of two primes.