The number 54742
54742 is a composite number with 8 divisors. Its prime factorisation is 2 × 101 × 271. Divisors (8): 1, 2, 101, 202, 271, 542, 27371, 54742.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
54742 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
54742 is composite. Its prime factorisation is
- 3
The divisors add up to 83232; without 54742 itself that is 28490, so 54742 is deficient (28490 is less than 54742). Euler's totient φ(54742) = 27000 numbers up to 54742 share no factor with it.
- 4
The digits of 54742 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 184 steps to reach 1.
LaTeX source of the formulas on this page
\[ 54742 = 2 \times 101 \times 271 \]
54742 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 83232 |
| Euler totient φ(n) | 27000 |
| Square | 2996686564 |
| Cube | 164044615886488 |
| Square root | 233.970084 |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 184 |
| Scientific notation | 5.4742 × |
54742 in other forms
| Form | Value |
|---|---|
| In words | fifty-four thousand seven hundred and forty-two |
| Binary (base 2) | 1101010111010110 |
| Octal (base 8) | 152726 |
| Hexadecimal (base 16) | D5D6 |
| Base 3 | 2210002111 |
| As time | 54742 seconds = 15 h 12 min 22 s |
Is 54742 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (54742 ÷ 2 = 27371) | 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 2) | 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 6) | 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 54742 a prime number?
No. 54742 = 2 × 101 × 271, so it is divisible by 2.
What are the factors of 54742?
1, 2, 101, 202, 271, 542, 27371, 54742.
What is 54742 in binary?
1101010111010110 (hexadecimal D5D6, octal 152726).
What is the square root of 54742?
About 233.9701.
Is 54742 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 54742?
It is a composite number with 8 divisors.