The number 42669
42669 is a composite number with 12 divisors. Its prime factorisation is × 11 × 431. Divisors (12): 1, 3, 9, 11, 33, 99, 431, 1293, 3879, 4741, 14223, 42669.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
42669 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
42669 is composite. Its prime factorisation is
- 3
The divisors add up to 67392; without 42669 itself that is 24723, so 42669 is deficient (24723 is less than 42669). Euler's totient φ(42669) = 25800 numbers up to 42669 share no factor with it.
- 4
The digits of 42669 add up to 27, and repeating that until one digit is left gives the digital root 9. The Collatz sequence (halve if even, else 3n+1) takes 150 steps to reach 1.
LaTeX source of the formulas on this page
\[ 42669 = 3^{2} \times 11 \times 431 \]42669 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 12 |
| Sum of divisors | 67392 |
| Euler totient φ(n) | 25800 |
| Square | 1820643561 |
| Cube | 77685040104309 |
| Square root | 206.564760 (= 3√4741) |
| Digit sum / digital root | 27 / 9 |
| Collatz steps to 1 | 150 |
| Scientific notation | 4.2669 × |
42669 in other forms
| Form | Value |
|---|---|
| In words | forty-two thousand six hundred and sixty-nine |
| Binary (base 2) | 1010011010101101 |
| Octal (base 8) | 123255 |
| Hexadecimal (base 16) | A6AD |
| Base 3 | 2011112100 |
| As time | 42669 seconds = 11 h 51 min 9 s |
Is 42669 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 (42669 ÷ 3 = 14223) | 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 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 | Yes (42669 ÷ 9 = 4741) | 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 | Yes (42669 ÷ 11 = 3879) | 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 42669 a prime number?
No. 42669 = × 11 × 431, so it is divisible by 3.
What are the factors of 42669?
1, 3, 9, 11, 33, 99, 431, 1293, 3879, 4741, 14223, 42669.
What is 42669 in binary?
1010011010101101 (hexadecimal A6AD, octal 123255).
What is the square root of 42669?
About 206.5648, exactly 3√4741.
Is 42669 divisible by 3?
Yes. Its digits add up to 27, a multiple of 3.
What is special about the number 42669?
It is a composite number with 12 divisors.