The number 42995
42995 is a composite number with 4 divisors. Its prime factorisation is 5 × 8599. Divisors (4): 1, 5, 8599, 42995.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 42995: a semiprime: 5 × 8599, the product of two primes.
- 2
42995 is composite. Its prime factorisation is
- 3
The divisors add up to 51600; without 42995 itself that is 8605, so 42995 is deficient (8605 is less than 42995). Euler's totient φ(42995) = 34392 numbers up to 42995 share no factor with it.
- 4
The digits of 42995 add up to 29, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 194 steps to reach 1.
LaTeX source of the formulas on this page
\[ 42995 = 5 \times 8599 \]
42995 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 51600 |
| Euler totient φ(n) | 34392 |
| Square | 1848570025 |
| Cube | 79479268224875 |
| Square root | 207.352357 |
| Digit sum / digital root | 29 / 2 |
| Collatz steps to 1 | 194 |
| Scientific notation | 4.2995 × |
42995 in other forms
| Form | Value |
|---|---|
| In words | forty-two thousand nine hundred and ninety-five |
| Binary (base 2) | 1010011111110011 |
| Octal (base 8) | 123763 |
| Hexadecimal (base 16) | A7F3 |
| Base 3 | 2011222102 |
| As time | 42995 seconds = 11 h 56 min 35 s |
Is 42995 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 | Yes (42995 ÷ 5 = 8599) | 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 2) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 5) | 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 11) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 42995 a prime number?
No. 42995 = 5 × 8599, so it is divisible by 5.
What are the factors of 42995?
1, 5, 8599, 42995.
What is 42995 in binary?
1010011111110011 (hexadecimal A7F3, octal 123763).
What is the square root of 42995?
About 207.3524.
Is 42995 divisible by 3?
No. Its digits add up to 29, which is not a multiple of 3.
What is special about the number 42995?
42995 is a semiprime: 5 × 8599, the product of two primes.