The number 42873
42873 is a composite number with 8 divisors. Its prime factorisation is 3 × 31 × 461. Divisors (8): 1, 3, 31, 93, 461, 1383, 14291, 42873.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
42873 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
42873 is composite. Its prime factorisation is
- 3
The divisors add up to 59136; without 42873 itself that is 16263, so 42873 is deficient (16263 is less than 42873). Euler's totient φ(42873) = 27600 numbers up to 42873 share no factor with it.
- 4
The digits of 42873 add up to 24, and repeating that until one digit is left gives the digital root 6. The Collatz sequence (halve if even, else 3n+1) takes 101 steps to reach 1.
LaTeX source of the formulas on this page
\[ 42873 = 3 \times 31 \times 461 \]
42873 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 59136 |
| Euler totient φ(n) | 27600 |
| Square | 1838094129 |
| Cube | 78804609592617 |
| Square root | 207.057963 |
| Digit sum / digital root | 24 / 6 |
| Collatz steps to 1 | 101 |
| Scientific notation | 4.2873 × |
42873 in other forms
| Form | Value |
|---|---|
| In words | forty-two thousand eight hundred and seventy-three |
| Binary (base 2) | 1010011101111001 |
| Octal (base 8) | 123571 |
| Hexadecimal (base 16) | A779 |
| Base 3 | 2011210220 |
| As time | 42873 seconds = 11 h 54 min 33 s |
Is 42873 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 | Yes (42873 ÷ 3 = 14291) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 1) | 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 3) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 5) | 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 1) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 6) | 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 9) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 42873 a prime number?
No. 42873 = 3 × 31 × 461, so it is divisible by 3.
What are the factors of 42873?
1, 3, 31, 93, 461, 1383, 14291, 42873.
What is 42873 in binary?
1010011101111001 (hexadecimal A779, octal 123571).
What is the square root of 42873?
About 207.0580.
Is 42873 divisible by 3?
Yes. Its digits add up to 24, a multiple of 3.
What is special about the number 42873?
It is a composite number with 8 divisors.