The number 42027
42027 is a composite number with 4 divisors. Its prime factorisation is 3 × 14009. Divisors (4): 1, 3, 14009, 42027.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 42027: a semiprime: 3 × 14009, the product of two primes.
- 2
42027 is composite. Its prime factorisation is
- 3
The divisors add up to 56040; without 42027 itself that is 14013, so 42027 is deficient (14013 is less than 42027). Euler's totient φ(42027) = 28016 numbers up to 42027 share no factor with it.
- 4
The digits of 42027 add up to 15, and repeating that until one digit is left gives the digital root 6. The Collatz sequence (halve if even, else 3n+1) takes 181 steps to reach 1.
LaTeX source of the formulas on this page
\[ 42027 = 3 \times 14009 \]
42027 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 56040 |
| Euler totient φ(n) | 28016 |
| Square | 1766268729 |
| Cube | 74230975873683 |
| Square root | 205.004878 |
| Digit sum / digital root | 15 / 6 |
| Collatz steps to 1 | 181 |
| Scientific notation | 4.2027 × |
42027 in other forms
| Form | Value |
|---|---|
| In words | forty-two thousand and twenty-seven |
| Binary (base 2) | 1010010000101011 |
| Octal (base 8) | 122053 |
| Hexadecimal (base 16) | A42B |
| Base 3 | 2010122120 |
| As time | 42027 seconds = 11 h 40 min 27 s |
Is 42027 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 (42027 ÷ 3 = 14009) | 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 2) | 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 6) | 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 6) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 7) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 7) | 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 42027 a prime number?
No. 42027 = 3 × 14009, so it is divisible by 3.
What are the factors of 42027?
1, 3, 14009, 42027.
What is 42027 in binary?
1010010000101011 (hexadecimal A42B, octal 122053).
What is the square root of 42027?
About 205.0049.
Is 42027 divisible by 3?
Yes. Its digits add up to 15, a multiple of 3.
What is special about the number 42027?
42027 is a semiprime: 3 × 14009, the product of two primes.