The number 24142
24142 is a palindrome: it reads 24142 backwards too. Its prime factorisation is 2 × 12071. Divisors (4): 1, 2, 12071, 24142.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 24142: a palindrome: it reads 24142 backwards too; a semiprime: 2 × 12071, the product of two primes.
- 2
24142 is composite. Its prime factorisation is
- 3
The divisors add up to 36216; without 24142 itself that is 12074, so 24142 is deficient (12074 is less than 24142). Euler's totient φ(24142) = 12070 numbers up to 24142 share no factor with it.
- 4
The digits of 24142 add up to 13, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 43 steps to reach 1.
LaTeX source of the formulas on this page
\[ 24142 = 2 \times 12071 \]
24142 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 36216 |
| Euler totient φ(n) | 12070 |
| Square | 582836164 |
| Cube | 14070830671288 |
| Square root | 155.376961 |
| Digit sum / digital root | 13 / 4 |
| Collatz steps to 1 | 43 |
| Scientific notation | 2.4142 × |
24142 in other forms
| Form | Value |
|---|---|
| In words | twenty-four thousand one hundred and forty-two |
| Binary (base 2) | 101111001001110 |
| Octal (base 8) | 57116 |
| Hexadecimal (base 16) | 5E4E |
| Base 3 | 1020010011 |
| As time | 24142 seconds = 6 h 42 min 22 s |
Is 24142 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (24142 ÷ 2 = 12071) | 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 6) | 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 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 8) | 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 24142 a prime number?
No. 24142 = 2 × 12071, so it is divisible by 2.
What are the factors of 24142?
1, 2, 12071, 24142.
What is 24142 in binary?
101111001001110 (hexadecimal 5E4E, octal 57116).
What is the square root of 24142?
About 155.3770.
Is 24142 divisible by 3?
No. Its digits add up to 13, which is not a multiple of 3.
What is special about the number 24142?
24142 is a palindrome: it reads 24142 backwards too; a semiprime: 2 × 12071, the product of two primes.