The number 42249
42249 is a composite number with 4 divisors. Its prime factorisation is 3 × 14083. Divisors (4): 1, 3, 14083, 42249.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 42249: a semiprime: 3 × 14083, the product of two primes.
- 2
42249 is composite. Its prime factorisation is
- 3
The divisors add up to 56336; without 42249 itself that is 14087, so 42249 is deficient (14087 is less than 42249). Euler's totient φ(42249) = 28164 numbers up to 42249 share no factor with it.
- 4
The digits of 42249 add up to 21, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 287 steps to reach 1.
LaTeX source of the formulas on this page
\[ 42249 = 3 \times 14083 \]
42249 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 56336 |
| Euler totient φ(n) | 28164 |
| Square | 1784978001 |
| Cube | 75413535564249 |
| Square root | 205.545615 |
| Digit sum / digital root | 21 / 3 |
| Collatz steps to 1 | 287 |
| Scientific notation | 4.2249 × |
42249 in other forms
| Form | Value |
|---|---|
| In words | forty-two thousand two hundred and forty-nine |
| Binary (base 2) | 1010010100001001 |
| Octal (base 8) | 122411 |
| Hexadecimal (base 16) | A509 |
| Base 3 | 2010221210 |
| As time | 42249 seconds = 11 h 44 min 9 s |
Is 42249 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 (42249 ÷ 3 = 14083) | 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 3) | 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 1) | 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 9) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 9) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 9) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 42249 a prime number?
No. 42249 = 3 × 14083, so it is divisible by 3.
What are the factors of 42249?
1, 3, 14083, 42249.
What is 42249 in binary?
1010010100001001 (hexadecimal A509, octal 122411).
What is the square root of 42249?
About 205.5456.
Is 42249 divisible by 3?
Yes. Its digits add up to 21, a multiple of 3.
What is special about the number 42249?
42249 is a semiprime: 3 × 14083, the product of two primes.