The number 24942
24942 is a palindrome: it reads 24942 backwards too. Its prime factorisation is 2 × 3 × 4157. Divisors (8): 1, 2, 3, 6, 4157, 8314, 12471, 24942.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 24942: a palindrome: it reads 24942 backwards too.
- 2
24942 is composite. Its prime factorisation is
- 3
The divisors add up to 49896; without 24942 itself that is 24954, so 24942 is abundant (24954 is more than 24942). Euler's totient φ(24942) = 8312 numbers up to 24942 share no factor with it.
- 4
The digits of 24942 add up to 21, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 188 steps to reach 1.
LaTeX source of the formulas on this page
\[ 24942 = 2 \times 3 \times 4157 \]
24942 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 49896 |
| Euler totient φ(n) | 8312 |
| Square | 622103364 |
| Cube | 15516502104888 |
| Square root | 157.930364 |
| Digit sum / digital root | 21 / 3 |
| Collatz steps to 1 | 188 |
| Scientific notation | 2.4942 × |
24942 in other forms
| Form | Value |
|---|---|
| In words | twenty-four thousand nine hundred and forty-two |
| Binary (base 2) | 110000101101110 |
| Octal (base 8) | 60556 |
| Hexadecimal (base 16) | 616E |
| Base 3 | 1021012210 |
| As time | 24942 seconds = 6 h 55 min 42 s |
Is 24942 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (24942 ÷ 2 = 12471) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (24942 ÷ 3 = 8314) | 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 | Yes (24942 ÷ 6 = 4157) | 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 3) | 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 5) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 6) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 24942 a prime number?
No. 24942 = 2 × 3 × 4157, so it is divisible by 2.
What are the factors of 24942?
1, 2, 3, 6, 4157, 8314, 12471, 24942.
What is 24942 in binary?
110000101101110 (hexadecimal 616E, octal 60556).
What is the square root of 24942?
About 157.9304.
Is 24942 divisible by 3?
Yes. Its digits add up to 21, a multiple of 3.
What is special about the number 24942?
24942 is a palindrome: it reads 24942 backwards too.