The number 38123
38123 is a composite number with 4 divisors. Its prime factorisation is 67 × 569. Divisors (4): 1, 67, 569, 38123.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 38123: a semiprime: 67 × 569, the product of two primes.
- 2
38123 is composite. Its prime factorisation is
- 3
The divisors add up to 38760; without 38123 itself that is 637, so 38123 is deficient (637 is less than 38123). Euler's totient φ(38123) = 37488 numbers up to 38123 share no factor with it.
- 4
The digits of 38123 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 54 steps to reach 1.
LaTeX source of the formulas on this page
\[ 38123 = 67 \times 569 \]
38123 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 38760 |
| Euler totient φ(n) | 37488 |
| Square | 1453363129 |
| Cube | 55406562566867 |
| Square root | 195.251120 |
| Digit sum / digital root | 17 / 8 |
| Collatz steps to 1 | 54 |
| Scientific notation | 3.8123 × |
38123 in other forms
| Form | Value |
|---|---|
| In words | thirty-eight thousand one hundred and twenty-three |
| Binary (base 2) | 1001010011101011 |
| Octal (base 8) | 112353 |
| Hexadecimal (base 16) | 94EB |
| Base 3 | 1221021222 |
| As time | 38123 seconds = 10 h 35 min 23 s |
Is 38123 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 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 5) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 1) | 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 3) | 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 3) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 8) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 11) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 38123 a prime number?
No. 38123 = 67 × 569, so it is divisible by 67.
What are the factors of 38123?
1, 67, 569, 38123.
What is 38123 in binary?
1001010011101011 (hexadecimal 94EB, octal 112353).
What is the square root of 38123?
About 195.2511.
Is 38123 divisible by 3?
No. Its digits add up to 17, which is not a multiple of 3.
What is special about the number 38123?
38123 is a semiprime: 67 × 569, the product of two primes.