The number 42694
42694 is a composite number with 4 divisors. Its prime factorisation is 2 × 21347. Divisors (4): 1, 2, 21347, 42694.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 42694: a semiprime: 2 × 21347, the product of two primes.
- 2
42694 is composite. Its prime factorisation is
- 3
The divisors add up to 64044; without 42694 itself that is 21350, so 42694 is deficient (21350 is less than 42694). Euler's totient φ(42694) = 21346 numbers up to 42694 share no factor with it.
- 4
The digits of 42694 add up to 25, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 57 steps to reach 1.
LaTeX source of the formulas on this page
\[ 42694 = 2 \times 21347 \]
42694 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 64044 |
| Euler totient φ(n) | 21346 |
| Square | 1822777636 |
| Cube | 77821668391384 |
| Square root | 206.625265 |
| Digit sum / digital root | 25 / 7 |
| Collatz steps to 1 | 57 |
| Scientific notation | 4.2694 × |
42694 in other forms
| Form | Value |
|---|---|
| In words | forty-two thousand six hundred and ninety-four |
| Binary (base 2) | 1010011011000110 |
| Octal (base 8) | 123306 |
| Hexadecimal (base 16) | A6C6 |
| Base 3 | 2011120021 |
| As time | 42694 seconds = 11 h 51 min 34 s |
Is 42694 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (42694 ÷ 2 = 21347) | 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 4) | 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 1) | 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 7) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 4) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 3) | 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 42694 a prime number?
No. 42694 = 2 × 21347, so it is divisible by 2.
What are the factors of 42694?
1, 2, 21347, 42694.
What is 42694 in binary?
1010011011000110 (hexadecimal A6C6, octal 123306).
What is the square root of 42694?
About 206.6253.
Is 42694 divisible by 3?
No. Its digits add up to 25, which is not a multiple of 3.
What is special about the number 42694?
42694 is a semiprime: 2 × 21347, the product of two primes.