The number 42969
42969 is a composite number with 4 divisors. Its prime factorisation is 3 × 14323. Divisors (4): 1, 3, 14323, 42969.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 42969: a semiprime: 3 × 14323, the product of two primes.
- 2
42969 is composite. Its prime factorisation is
- 3
The divisors add up to 57296; without 42969 itself that is 14327, so 42969 is deficient (14327 is less than 42969). Euler's totient φ(42969) = 28644 numbers up to 42969 share no factor with it.
- 4
The digits of 42969 add up to 30, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 75 steps to reach 1.
LaTeX source of the formulas on this page
\[ 42969 = 3 \times 14323 \]
42969 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 57296 |
| Euler totient φ(n) | 28644 |
| Square | 1846334961 |
| Cube | 79335166939209 |
| Square root | 207.289652 |
| Digit sum / digital root | 30 / 3 |
| Collatz steps to 1 | 75 |
| Scientific notation | 4.2969 × |
42969 in other forms
| Form | Value |
|---|---|
| In words | forty-two thousand nine hundred and sixty-nine |
| Binary (base 2) | 1010011111011001 |
| Octal (base 8) | 123731 |
| Hexadecimal (base 16) | A7D9 |
| Base 3 | 2011221110 |
| As time | 42969 seconds = 11 h 56 min 9 s |
Is 42969 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 | Yes (42969 ÷ 3 = 14323) | 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 4) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 3) | 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 1) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 3) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 9) | 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 9) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 42969 a prime number?
No. 42969 = 3 × 14323, so it is divisible by 3.
What are the factors of 42969?
1, 3, 14323, 42969.
What is 42969 in binary?
1010011111011001 (hexadecimal A7D9, octal 123731).
What is the square root of 42969?
About 207.2897.
Is 42969 divisible by 3?
Yes. Its digits add up to 30, a multiple of 3.
What is special about the number 42969?
42969 is a semiprime: 3 × 14323, the product of two primes.