The number 42950
42950 is a composite number with 12 divisors. Its prime factorisation is 2 × × 859. Divisors (12): 1, 2, 5, 10, 25, 50, 859, 1718, 4295, 8590, 21475, 42950.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
42950 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
42950 is composite. Its prime factorisation is
- 3
The divisors add up to 79980; without 42950 itself that is 37030, so 42950 is deficient (37030 is less than 42950). Euler's totient φ(42950) = 17160 numbers up to 42950 share no factor with it.
- 4
The digits of 42950 add up to 20, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 75 steps to reach 1.
LaTeX source of the formulas on this page
\[ 42950 = 2 \times 5^{2} \times 859 \]42950 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 12 |
| Sum of divisors | 79980 |
| Euler totient φ(n) | 17160 |
| Square | 1844702500 |
| Cube | 79229972375000 |
| Square root | 207.243818 (= 5√1718) |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 75 |
| Scientific notation | 4.295 × |
42950 in other forms
| Form | Value |
|---|---|
| In words | forty-two thousand nine hundred and fifty |
| Binary (base 2) | 1010011111000110 |
| Octal (base 8) | 123706 |
| Hexadecimal (base 16) | A7C6 |
| Base 3 | 2011220202 |
| As time | 42950 seconds = 11 h 55 min 50 s |
Is 42950 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (42950 ÷ 2 = 21475) | 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 2) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | Yes (42950 ÷ 5 = 8590) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 2) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 5) | 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 6) | 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 | Yes (42950 ÷ 10 = 4295) | 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 2) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 42950 a prime number?
No. 42950 = 2 × × 859, so it is divisible by 2.
What are the factors of 42950?
1, 2, 5, 10, 25, 50, 859, 1718, 4295, 8590, 21475, 42950.
What is 42950 in binary?
1010011111000110 (hexadecimal A7C6, octal 123706).
What is the square root of 42950?
About 207.2438, exactly 5√1718.
Is 42950 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 42950?
It is a composite number with 12 divisors.