The number 10423
10423 is a composite number with 4 divisors. Its prime factorisation is 7 × 1489. Divisors (4): 1, 7, 1489, 10423.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 10423: a semiprime: 7 × 1489, the product of two primes.
- 2
10423 is composite. Its prime factorisation is
- 3
The divisors add up to 11920; without 10423 itself that is 1497, so 10423 is deficient (1497 is less than 10423). Euler's totient φ(10423) = 8928 numbers up to 10423 share no factor with it.
- 4
The digits of 10423 add up to 10, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 135 steps to reach 1.
LaTeX source of the formulas on this page
\[ 10423 = 7 \times 1489 \]
10423 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 11920 |
| Euler totient φ(n) | 8928 |
| Square | 108638929 |
| Cube | 1132343556967 |
| Square root | 102.093095 |
| Digit sum / digital root | 10 / 1 |
| Collatz steps to 1 | 135 |
| Scientific notation | 1.0423 × |
10423 in other forms
| Form | Value |
|---|---|
| In words | ten thousand four hundred and twenty-three |
| Binary (base 2) | 10100010110111 |
| Octal (base 8) | 24267 |
| Hexadecimal (base 16) | 28B7 |
| Base 3 | 112022001 |
| As time | 10423 seconds = 2 h 53 min 43 s |
Is 10423 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 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 1) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | Yes (10423 ÷ 7 = 1489) | 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 1) | 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 6) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 7) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 10423 a prime number?
No. 10423 = 7 × 1489, so it is divisible by 7.
What are the factors of 10423?
1, 7, 1489, 10423.
What is 10423 in binary?
10100010110111 (hexadecimal 28B7, octal 24267).
What is the square root of 10423?
About 102.0931.
Is 10423 divisible by 3?
No. Its digits add up to 10, which is not a multiple of 3.
What is special about the number 10423?
10423 is a semiprime: 7 × 1489, the product of two primes.