The number 42425
42425 is a composite number with 6 divisors. Its prime factorisation is Ć 1697. Divisors (6): 1, 5, 25, 1697, 8485, 42425.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
42425 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
42425 is composite. Its prime factorisation is
- 3
The divisors add up to 52638; without 42425 itself that is 10213, so 42425 is deficient (10213 is less than 42425). Euler's totient Ļ(42425) = 33920 numbers up to 42425 share no factor with it.
- 4
The digits of 42425 add up to 17, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 101 steps to reach 1.
LaTeX source of the formulas on this page
\[ 42425 = 5^{2} \times 1697 \]42425 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 6 |
| Sum of divisors | 52638 |
| Euler totient Ļ(n) | 33920 |
| Square | 1799880625 |
| Cube | 76359935515625 |
| Square root | 205.973299 (= 5ā1697) |
| Digit sum / digital root | 17 / 8 |
| Collatz steps to 1 | 101 |
| Scientific notation | 4.2425 Ć |
42425 in other forms
| Form | Value |
|---|---|
| In words | forty-two thousand four hundred and twenty-five |
| Binary (base 2) | 1010010110111001 |
| Octal (base 8) | 122671 |
| Hexadecimal (base 16) | A5B9 |
| Base 3 | 2011012022 |
| As time | 42425 seconds = 11 h 47 min 5 s |
Is 42425 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 1) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | Yes (42425 Ć· 5 = 8485) | 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 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 8) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 5) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 9) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 5) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 42425 a prime number?
No. 42425 = Ć 1697, so it is divisible by 5.
What are the factors of 42425?
1, 5, 25, 1697, 8485, 42425.
What is 42425 in binary?
1010010110111001 (hexadecimal A5B9, octal 122671).
What is the square root of 42425?
About 205.9733, exactly 5ā1697.
Is 42425 divisible by 3?
No. Its digits add up to 17, which is not a multiple of 3.
What is special about the number 42425?
It is a composite number with 6 divisors.