The number 42613
42613 is a composite number with 4 divisors. Its prime factorisation is 43 × 991. Divisors (4): 1, 43, 991, 42613.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 42613: a semiprime: 43 × 991, the product of two primes.
- 2
42613 is composite. Its prime factorisation is
- 3
The divisors add up to 43648; without 42613 itself that is 1035, so 42613 is deficient (1035 is less than 42613). Euler's totient φ(42613) = 41580 numbers up to 42613 share no factor with it.
- 4
The digits of 42613 add up to 16, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 88 steps to reach 1.
LaTeX source of the formulas on this page
\[ 42613 = 43 \times 991 \]
42613 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 43648 |
| Euler totient φ(n) | 41580 |
| Square | 1815867769 |
| Cube | 77379573240397 |
| Square root | 206.429165 |
| Digit sum / digital root | 16 / 7 |
| Collatz steps to 1 | 88 |
| Scientific notation | 4.2613 × |
42613 in other forms
| Form | Value |
|---|---|
| In words | forty-two thousand six hundred and thirteen |
| Binary (base 2) | 1010011001110101 |
| Octal (base 8) | 123165 |
| Hexadecimal (base 16) | A675 |
| Base 3 | 2011110021 |
| As time | 42613 seconds = 11 h 50 min 13 s |
Is 42613 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | No (remainder 1) | 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 1) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 3) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 1) | 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 5) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 7) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 3) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 10) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 1) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 42613 a prime number?
No. 42613 = 43 × 991, so it is divisible by 43.
What are the factors of 42613?
1, 43, 991, 42613.
What is 42613 in binary?
1010011001110101 (hexadecimal A675, octal 123165).
What is the square root of 42613?
About 206.4292.
Is 42613 divisible by 3?
No. Its digits add up to 16, which is not a multiple of 3.
What is special about the number 42613?
42613 is a semiprime: 43 × 991, the product of two primes.