The number 49442
49442 is a composite number with 8 divisors. Its prime factorisation is 2 × 59 × 419. Divisors (8): 1, 2, 59, 118, 419, 838, 24721, 49442.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 49442: a happy number: repeatedly adding the squares of its digits reaches 1.
- 2
49442 is composite. Its prime factorisation is
- 3
The divisors add up to 75600; without 49442 itself that is 26158, so 49442 is deficient (26158 is less than 49442). Euler's totient φ(49442) = 24244 numbers up to 49442 share no factor with it.
- 4
The digits of 49442 add up to 23, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 96 steps to reach 1.
LaTeX source of the formulas on this page
\[ 49442 = 2 \times 59 \times 419 \]
49442 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 75600 |
| Euler totient φ(n) | 24244 |
| Square | 2444511364 |
| Cube | 120861530858888 |
| Square root | 222.355571 |
| Digit sum / digital root | 23 / 5 |
| Collatz steps to 1 | 96 |
| Scientific notation | 4.9442 × |
49442 in other forms
| Form | Value |
|---|---|
| In words | forty-nine thousand four hundred and forty-two |
| Binary (base 2) | 1100000100100010 |
| Octal (base 8) | 140442 |
| Hexadecimal (base 16) | C122 |
| Base 3 | 2111211012 |
| As time | 49442 seconds = 13 h 44 min 2 s |
Is 49442 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (49442 ÷ 2 = 24721) | 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 | No (remainder 2) | 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 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 2) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 5) | 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 8) | 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 49442 a prime number?
No. 49442 = 2 × 59 × 419, so it is divisible by 2.
What are the factors of 49442?
1, 2, 59, 118, 419, 838, 24721, 49442.
What is 49442 in binary?
1100000100100010 (hexadecimal C122, octal 140442).
What is the square root of 49442?
About 222.3556.
Is 49442 divisible by 3?
No. Its digits add up to 23, which is not a multiple of 3.
What is special about the number 49442?
49442 is a happy number: repeatedly adding the squares of its digits reaches 1.