The number 24139
24139 is a composite number with 4 divisors. Its prime factorisation is 101 × 239. Divisors (4): 1, 101, 239, 24139.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 24139: a semiprime: 101 × 239, the product of two primes.
- 2
24139 is composite. Its prime factorisation is
- 3
The divisors add up to 24480; without 24139 itself that is 341, so 24139 is deficient (341 is less than 24139). Euler's totient φ(24139) = 23800 numbers up to 24139 share no factor with it.
- 4
The digits of 24139 add up to 19, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 43 steps to reach 1.
LaTeX source of the formulas on this page
\[ 24139 = 101 \times 239 \]
24139 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 24480 |
| Euler totient φ(n) | 23800 |
| Square | 582691321 |
| Cube | 14065585797619 |
| Square root | 155.367307 |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 43 |
| Scientific notation | 2.4139 × |
24139 in other forms
| Form | Value |
|---|---|
| In words | twenty-four thousand one hundred and thirty-nine |
| Binary (base 2) | 101111001001011 |
| Octal (base 8) | 57113 |
| Hexadecimal (base 16) | 5E4B |
| Base 3 | 1020010001 |
| As time | 24139 seconds = 6 h 42 min 19 s |
Is 24139 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 | No (remainder 1) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 3) | 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 1) | 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 3) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 1) | 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 5) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 7) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 24139 a prime number?
No. 24139 = 101 × 239, so it is divisible by 101.
What are the factors of 24139?
1, 101, 239, 24139.
What is 24139 in binary?
101111001001011 (hexadecimal 5E4B, octal 57113).
What is the square root of 24139?
About 155.3673.
Is 24139 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 24139?
24139 is a semiprime: 101 × 239, the product of two primes.