The number 61429
61429 is a composite number with 4 divisors. Its prime factorisation is 47 × 1307. Divisors (4): 1, 47, 1307, 61429.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 61429: a semiprime: 47 × 1307, the product of two primes.
- 2
61429 is composite. Its prime factorisation is
- 3
The divisors add up to 62784; without 61429 itself that is 1355, so 61429 is deficient (1355 is less than 61429). Euler's totient φ(61429) = 60076 numbers up to 61429 share no factor with it.
- 4
The digits of 61429 add up to 22, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 117 steps to reach 1.
LaTeX source of the formulas on this page
\[ 61429 = 47 \times 1307 \]
61429 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 62784 |
| Euler totient φ(n) | 60076 |
| Square | 3773522041 |
| Cube | 231803685456589 |
| Square root | 247.848744 |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 117 |
| Scientific notation | 6.1429 × |
61429 in other forms
| Form | Value |
|---|---|
| In words | sixty-one thousand four hundred and twenty-nine |
| Binary (base 2) | 1110111111110101 |
| Octal (base 8) | 167765 |
| Hexadecimal (base 16) | EFF5 |
| Base 3 | 10010021011 |
| As time | 61429 seconds = 17 h 3 min 49 s |
Is 61429 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 1) | 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 1) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 4) | 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 4) | 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 5) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 1) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 61429 a prime number?
No. 61429 = 47 × 1307, so it is divisible by 47.
What are the factors of 61429?
1, 47, 1307, 61429.
What is 61429 in binary?
1110111111110101 (hexadecimal EFF5, octal 167765).
What is the square root of 61429?
About 247.8487.
Is 61429 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 61429?
61429 is a semiprime: 47 × 1307, the product of two primes.