The number 49042
49042 is a composite number with 16 divisors. Its prime factorisation is 2 × 7 × 31 × 113. Divisors (16): 1, 2, 7, 14, 31, 62, 113, 217, 226, 434, 791, 1582, 3503, 7006, 24521, 49042.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
49042 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
49042 is composite. Its prime factorisation is
- 3
The divisors add up to 87552; without 49042 itself that is 38510, so 49042 is deficient (38510 is less than 49042). Euler's totient φ(49042) = 20160 numbers up to 49042 share no factor with it.
- 4
The digits of 49042 add up to 19, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 158 steps to reach 1.
LaTeX source of the formulas on this page
\[ 49042 = 2 \times 7 \times 31 \times 113 \]
49042 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 87552 |
| Euler totient φ(n) | 20160 |
| Square | 2405117764 |
| Cube | 117951785382088 |
| Square root | 221.454284 |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 158 |
| Scientific notation | 4.9042 × |
49042 in other forms
| Form | Value |
|---|---|
| In words | forty-nine thousand and forty-two |
| Binary (base 2) | 1011111110010010 |
| Octal (base 8) | 137622 |
| Hexadecimal (base 16) | BF92 |
| Base 3 | 2111021101 |
| As time | 49042 seconds = 13 h 37 min 22 s |
Is 49042 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (49042 ÷ 2 = 24521) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 1) | 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 | No (remainder 2) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 4) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | Yes (49042 ÷ 7 = 7006) | 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 2) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 1) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 2) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 4) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 49042 a prime number?
No. 49042 = 2 × 7 × 31 × 113, so it is divisible by 2.
What are the factors of 49042?
1, 2, 7, 14, 31, 62, 113, 217, 226, 434, 791, 1582, 3503, 7006, 24521, 49042.
What is 49042 in binary?
1011111110010010 (hexadecimal BF92, octal 137622).
What is the square root of 49042?
About 221.4543.
Is 49042 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 49042?
It is a composite number with 16 divisors.