The number 16942
16942 is a composite number with 8 divisors. Its prime factorisation is 2 × 43 × 197. Divisors (8): 1, 2, 43, 86, 197, 394, 8471, 16942.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
16942 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
16942 is composite. Its prime factorisation is
- 3
The divisors add up to 26136; without 16942 itself that is 9194, so 16942 is deficient (9194 is less than 16942). Euler's totient φ(16942) = 8232 numbers up to 16942 share no factor with it.
- 4
The digits of 16942 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 58 steps to reach 1.
LaTeX source of the formulas on this page
\[ 16942 = 2 \times 43 \times 197 \]
16942 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 26136 |
| Euler totient φ(n) | 8232 |
| Square | 287031364 |
| Cube | 4862885368888 |
| Square root | 130.161438 |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 58 |
| Scientific notation | 1.6942 × |
16942 in other forms
| Form | Value |
|---|---|
| In words | sixteen thousand nine hundred and forty-two |
| Binary (base 2) | 100001000101110 |
| Octal (base 8) | 41056 |
| Hexadecimal (base 16) | 422E |
| Base 3 | 212020111 |
| As time | 16942 seconds = 4 h 42 min 22 s |
Is 16942 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (16942 ÷ 2 = 8471) | 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 2) | 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 16942 a prime number?
No. 16942 = 2 × 43 × 197, so it is divisible by 2.
What are the factors of 16942?
1, 2, 43, 86, 197, 394, 8471, 16942.
What is 16942 in binary?
100001000101110 (hexadecimal 422E, octal 41056).
What is the square root of 16942?
About 130.1614.
Is 16942 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 16942?
It is a composite number with 8 divisors.