The number 11429
11429 is a composite number with 4 divisors. Its prime factorisation is 11 × 1039. Divisors (4): 1, 11, 1039, 11429.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 11429: a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 11 × 1039, the product of two primes.
- 2
11429 is composite. Its prime factorisation is
- 3
The divisors add up to 12480; without 11429 itself that is 1051, so 11429 is deficient (1051 is less than 11429). Euler's totient φ(11429) = 10380 numbers up to 11429 share no factor with it.
- 4
The digits of 11429 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 174 steps to reach 1.
LaTeX source of the formulas on this page
\[ 11429 = 11 \times 1039 \]
11429 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 12480 |
| Euler totient φ(n) | 10380 |
| Square | 130622041 |
| Cube | 1492879306589 |
| Square root | 106.906501 |
| Digit sum / digital root | 17 / 8 |
| Collatz steps to 1 | 174 |
| Scientific notation | 1.1429 × |
11429 in other forms
| Form | Value |
|---|---|
| In words | eleven thousand four hundred and twenty-nine |
| Binary (base 2) | 10110010100101 |
| Octal (base 8) | 26245 |
| Hexadecimal (base 16) | 2CA5 |
| Base 3 | 120200022 |
| As time | 11429 seconds = 3 h 10 min 29 s |
Is 11429 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 | No (remainder 4) | 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 5) | 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 9) | A number is divisible by 10 if the last digit is 0. |
| 11 | Yes (11429 ÷ 11 = 1039) | 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 11429 a prime number?
No. 11429 = 11 × 1039, so it is divisible by 11.
What are the factors of 11429?
1, 11, 1039, 11429.
What is 11429 in binary?
10110010100101 (hexadecimal 2CA5, octal 26245).
What is the square root of 11429?
About 106.9065.
Is 11429 divisible by 3?
No. Its digits add up to 17, which is not a multiple of 3.
What is special about the number 11429?
11429 is a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 11 × 1039, the product of two primes.