The number 42983
42983 is a composite number with 4 divisors. Its prime factorisation is 53 × 811. Divisors (4): 1, 53, 811, 42983.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 42983: a semiprime: 53 × 811, the product of two primes.
- 2
42983 is composite. Its prime factorisation is
- 3
The divisors add up to 43848; without 42983 itself that is 865, so 42983 is deficient (865 is less than 42983). Euler's totient φ(42983) = 42120 numbers up to 42983 share no factor with it.
- 4
The digits of 42983 add up to 26, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 88 steps to reach 1.
LaTeX source of the formulas on this page
\[ 42983 = 53 \times 811 \]
42983 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 43848 |
| Euler totient φ(n) | 42120 |
| Square | 1847538289 |
| Cube | 79412738276087 |
| Square root | 207.323419 |
| Digit sum / digital root | 26 / 8 |
| Collatz steps to 1 | 88 |
| Scientific notation | 4.2983 × |
42983 in other forms
| Form | Value |
|---|---|
| In words | forty-two thousand nine hundred and eighty-three |
| Binary (base 2) | 1010011111100111 |
| Octal (base 8) | 123747 |
| Hexadecimal (base 16) | A7E7 |
| Base 3 | 2011221222 |
| As time | 42983 seconds = 11 h 56 min 23 s |
Is 42983 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | No (remainder 1) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 2) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 3) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 3) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 5) | 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 7) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 8) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 3) | 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 11) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 42983 a prime number?
No. 42983 = 53 × 811, so it is divisible by 53.
What are the factors of 42983?
1, 53, 811, 42983.
What is 42983 in binary?
1010011111100111 (hexadecimal A7E7, octal 123747).
What is the square root of 42983?
About 207.3234.
Is 42983 divisible by 3?
No. Its digits add up to 26, which is not a multiple of 3.
What is special about the number 42983?
42983 is a semiprime: 53 × 811, the product of two primes.