The number 11442
11442 is a composite number with 8 divisors. Its prime factorisation is 2 × 3 × 1907. Divisors (8): 1, 2, 3, 6, 1907, 3814, 5721, 11442.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
11442 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
11442 is composite. Its prime factorisation is
- 3
The divisors add up to 22896; without 11442 itself that is 11454, so 11442 is abundant (11454 is more than 11442). Euler's totient φ(11442) = 3812 numbers up to 11442 share no factor with it.
- 4
The digits of 11442 add up to 12, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 81 steps to reach 1.
LaTeX source of the formulas on this page
\[ 11442 = 2 \times 3 \times 1907 \]
11442 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 22896 |
| Euler totient φ(n) | 3812 |
| Square | 130919364 |
| Cube | 1497979362888 |
| Square root | 106.967285 |
| Digit sum / digital root | 12 / 3 |
| Collatz steps to 1 | 81 |
| Scientific notation | 1.1442 × |
11442 in other forms
| Form | Value |
|---|---|
| In words | eleven thousand four hundred and forty-two |
| Binary (base 2) | 10110010110010 |
| Octal (base 8) | 26262 |
| Hexadecimal (base 16) | 2CB2 |
| Base 3 | 120200210 |
| As time | 11442 seconds = 3 h 10 min 42 s |
Is 11442 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (11442 ÷ 2 = 5721) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (11442 ÷ 3 = 3814) | 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 | Yes (11442 ÷ 6 = 1907) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 4) | 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 3) | 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 2) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 6) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 11442 a prime number?
No. 11442 = 2 × 3 × 1907, so it is divisible by 2.
What are the factors of 11442?
1, 2, 3, 6, 1907, 3814, 5721, 11442.
What is 11442 in binary?
10110010110010 (hexadecimal 2CB2, octal 26262).
What is the square root of 11442?
About 106.9673.
Is 11442 divisible by 3?
Yes. Its digits add up to 12, a multiple of 3.
What is special about the number 11442?
It is a composite number with 8 divisors.