The number 75442
75442 is a composite number with 8 divisors. Its prime factorisation is 2 × 67 × 563. Divisors (8): 1, 2, 67, 134, 563, 1126, 37721, 75442.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
75442 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
75442 is composite. Its prime factorisation is
- 3
The divisors add up to 115056; without 75442 itself that is 39614, so 75442 is deficient (39614 is less than 75442). Euler's totient φ(75442) = 37092 numbers up to 75442 share no factor with it.
- 4
The digits of 75442 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 37 steps to reach 1.
LaTeX source of the formulas on this page
\[ 75442 = 2 \times 67 \times 563 \]
75442 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 115056 |
| Euler totient φ(n) | 37092 |
| Square | 5691495364 |
| Cube | 429377793250888 |
| Square root | 274.667071 |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 37 |
| Scientific notation | 7.5442 × |
75442 in other forms
| Form | Value |
|---|---|
| In words | seventy-five thousand four hundred and forty-two |
| Binary (base 2) | 10010011010110010 |
| Octal (base 8) | 223262 |
| Hexadecimal (base 16) | 126B2 |
| Base 3 | 10211111011 |
| As time | 75442 seconds = 20 h 57 min 22 s |
Is 75442 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (75442 ÷ 2 = 37721) | 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 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 2) | 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 4) | 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 75442 a prime number?
No. 75442 = 2 × 67 × 563, so it is divisible by 2.
What are the factors of 75442?
1, 2, 67, 134, 563, 1126, 37721, 75442.
What is 75442 in binary?
10010011010110010 (hexadecimal 126B2, octal 223262).
What is the square root of 75442?
About 274.6671.
Is 75442 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 75442?
It is a composite number with 8 divisors.