The number 4942
4942 is a composite number with 8 divisors. Its prime factorisation is 2 × 7 × 353. Divisors (8): 1, 2, 7, 14, 353, 706, 2471, 4942.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
4942 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
4942 is composite. Its prime factorisation is
- 3
The divisors add up to 8496; without 4942 itself that is 3554, so 4942 is deficient (3554 is less than 4942). Euler's totient φ(4942) = 2112 numbers up to 4942 share no factor with it.
- 4
The digits of 4942 add up to 19, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 134 steps to reach 1.
LaTeX source of the formulas on this page
\[ 4942 = 2 \times 7 \times 353 \]
4942 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 8496 |
| Euler totient φ(n) | 2112 |
| Square | 24423364 |
| Cube | 120700264888 |
| Square root | 70.299360 |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 134 |
| Scientific notation | 4.942 × |
4942 in other forms
| Form | Value |
|---|---|
| In words | four thousand nine hundred and forty-two |
| Binary (base 2) | 1001101001110 |
| Octal (base 8) | 11516 |
| Hexadecimal (base 16) | 134E |
| Base 3 | 20210001 |
| As time | 4942 seconds = 1 h 22 min 22 s |
Is 4942 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (4942 ÷ 2 = 2471) | 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 | Yes (4942 ÷ 7 = 706) | 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 1) | 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 3) | 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 4942 a prime number?
No. 4942 = 2 × 7 × 353, so it is divisible by 2.
What are the factors of 4942?
1, 2, 7, 14, 353, 706, 2471, 4942.
What is 4942 in binary?
1001101001110 (hexadecimal 134E, octal 11516).
What is the square root of 4942?
About 70.2994.
Is 4942 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 4942?
It is a composite number with 8 divisors.