The number 42429
42429 is a composite number with 4 divisors. Its prime factorisation is 3 × 14143. Divisors (4): 1, 3, 14143, 42429.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 42429: a semiprime: 3 × 14143, the product of two primes.
- 2
42429 is composite. Its prime factorisation is
- 3
The divisors add up to 56576; without 42429 itself that is 14147, so 42429 is deficient (14147 is less than 42429). Euler's totient φ(42429) = 28284 numbers up to 42429 share no factor with it.
- 4
The digits of 42429 add up to 21, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 57 steps to reach 1.
LaTeX source of the formulas on this page
\[ 42429 = 3 \times 14143 \]
42429 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 56576 |
| Euler totient φ(n) | 28284 |
| Square | 1800220041 |
| Cube | 76381536119589 |
| Square root | 205.983009 |
| Digit sum / digital root | 21 / 3 |
| Collatz steps to 1 | 57 |
| Scientific notation | 4.2429 × |
42429 in other forms
| Form | Value |
|---|---|
| In words | forty-two thousand four hundred and twenty-nine |
| Binary (base 2) | 1010010110111101 |
| Octal (base 8) | 122675 |
| Hexadecimal (base 16) | A5BD |
| Base 3 | 2011012110 |
| As time | 42429 seconds = 11 h 47 min 9 s |
Is 42429 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 (42429 ÷ 3 = 14143) | 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 4) | 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 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 5) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 3) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 9) | 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 9) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 42429 a prime number?
No. 42429 = 3 × 14143, so it is divisible by 3.
What are the factors of 42429?
1, 3, 14143, 42429.
What is 42429 in binary?
1010010110111101 (hexadecimal A5BD, octal 122675).
What is the square root of 42429?
About 205.9830.
Is 42429 divisible by 3?
Yes. Its digits add up to 21, a multiple of 3.
What is special about the number 42429?
42429 is a semiprime: 3 × 14143, the product of two primes.