The number 48742
48742 is a composite number with 4 divisors. Its prime factorisation is 2 × 24371. Divisors (4): 1, 2, 24371, 48742.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 48742: a semiprime: 2 × 24371, the product of two primes.
- 2
48742 is composite. Its prime factorisation is
- 3
The divisors add up to 73116; without 48742 itself that is 24374, so 48742 is deficient (24374 is less than 48742). Euler's totient φ(48742) = 24370 numbers up to 48742 share no factor with it.
- 4
The digits of 48742 add up to 25, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 39 steps to reach 1.
LaTeX source of the formulas on this page
\[ 48742 = 2 \times 24371 \]
48742 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 73116 |
| Euler totient φ(n) | 24370 |
| Square | 2375782564 |
| Cube | 115800393734488 |
| Square root | 220.775904 |
| Digit sum / digital root | 25 / 7 |
| Collatz steps to 1 | 39 |
| Scientific notation | 4.8742 × |
48742 in other forms
| Form | Value |
|---|---|
| In words | forty-eight thousand seven hundred and forty-two |
| Binary (base 2) | 1011111001100110 |
| Octal (base 8) | 137146 |
| Hexadecimal (base 16) | BE66 |
| Base 3 | 2110212021 |
| As time | 48742 seconds = 13 h 32 min 22 s |
Is 48742 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (48742 ÷ 2 = 24371) | 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 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 7) | 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 1) | 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 48742 a prime number?
No. 48742 = 2 × 24371, so it is divisible by 2.
What are the factors of 48742?
1, 2, 24371, 48742.
What is 48742 in binary?
1011111001100110 (hexadecimal BE66, octal 137146).
What is the square root of 48742?
About 220.7759.
Is 48742 divisible by 3?
No. Its digits add up to 25, which is not a multiple of 3.
What is special about the number 48742?
48742 is a semiprime: 2 × 24371, the product of two primes.