The number 12423
12423 is a composite number with 8 divisors. Its prime factorisation is 3 × 41 × 101. Divisors (8): 1, 3, 41, 101, 123, 303, 4141, 12423.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
12423 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
12423 is composite. Its prime factorisation is
- 3
The divisors add up to 17136; without 12423 itself that is 4713, so 12423 is deficient (4713 is less than 12423). Euler's totient φ(12423) = 8000 numbers up to 12423 share no factor with it.
- 4
The digits of 12423 add up to 12, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 94 steps to reach 1.
LaTeX source of the formulas on this page
\[ 12423 = 3 \times 41 \times 101 \]
12423 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 17136 |
| Euler totient φ(n) | 8000 |
| Square | 154330929 |
| Cube | 1917253130967 |
| Square root | 111.458512 |
| Digit sum / digital root | 12 / 3 |
| Collatz steps to 1 | 94 |
| Scientific notation | 1.2423 × |
12423 in other forms
| Form | Value |
|---|---|
| In words | twelve thousand four hundred and twenty-three |
| Binary (base 2) | 11000010000111 |
| Octal (base 8) | 30207 |
| Hexadecimal (base 16) | 3087 |
| Base 3 | 122001010 |
| As time | 12423 seconds = 3 h 27 min 3 s |
Is 12423 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 (12423 ÷ 3 = 4141) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 3) | 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 7) | 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 3) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 4) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 3) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 12423 a prime number?
No. 12423 = 3 × 41 × 101, so it is divisible by 3.
What are the factors of 12423?
1, 3, 41, 101, 123, 303, 4141, 12423.
What is 12423 in binary?
11000010000111 (hexadecimal 3087, octal 30207).
What is the square root of 12423?
About 111.4585.
Is 12423 divisible by 3?
Yes. Its digits add up to 12, a multiple of 3.
What is special about the number 12423?
It is a composite number with 8 divisors.