The number 39442
39442 is a composite number with 16 divisors. Its prime factorisation is 2 × 13 × 37 × 41. Divisors (16): 1, 2, 13, 26, 37, 41, 74, 82, 481, 533, 962, 1066, 1517, 3034, 19721, 39442.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
39442 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
39442 is composite. Its prime factorisation is
- 3
The divisors add up to 67032; without 39442 itself that is 27590, so 39442 is deficient (27590 is less than 39442). Euler's totient φ(39442) = 17280 numbers up to 39442 share no factor with it.
- 4
The digits of 39442 add up to 22, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 62 steps to reach 1.
LaTeX source of the formulas on this page
\[ 39442 = 2 \times 13 \times 37 \times 41 \]
39442 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 67032 |
| Euler totient φ(n) | 17280 |
| Square | 1555671364 |
| Cube | 61358789938888 |
| Square root | 198.600101 |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 62 |
| Scientific notation | 3.9442 × |
39442 in other forms
| Form | Value |
|---|---|
| In words | thirty-nine thousand four hundred and forty-two |
| Binary (base 2) | 1001101000010010 |
| Octal (base 8) | 115022 |
| Hexadecimal (base 16) | 9A12 |
| Base 3 | 2000002211 |
| As time | 39442 seconds = 10 h 57 min 22 s |
Is 39442 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (39442 ÷ 2 = 19721) | 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 2) | 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 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 2) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 4) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 2) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 7) | 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 39442 a prime number?
No. 39442 = 2 × 13 × 37 × 41, so it is divisible by 2.
What are the factors of 39442?
1, 2, 13, 26, 37, 41, 74, 82, 481, 533, 962, 1066, 1517, 3034, 19721, 39442.
What is 39442 in binary?
1001101000010010 (hexadecimal 9A12, octal 115022).
What is the square root of 39442?
About 198.6001.
Is 39442 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 39442?
It is a composite number with 16 divisors.