The number 84442
84442 is a composite number with 4 divisors. Its prime factorisation is 2 × 42221. Divisors (4): 1, 2, 42221, 84442.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 84442: a semiprime: 2 × 42221, the product of two primes.
- 2
84442 is composite. Its prime factorisation is
- 3
The divisors add up to 126666; without 84442 itself that is 42224, so 84442 is deficient (42224 is less than 84442). Euler's totient φ(84442) = 42220 numbers up to 84442 share no factor with it.
- 4
The digits of 84442 add up to 22, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 151 steps to reach 1.
LaTeX source of the formulas on this page
\[ 84442 = 2 \times 42221 \]
84442 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 126666 |
| Euler totient φ(n) | 42220 |
| Square | 7130451364 |
| Cube | 602109574078888 |
| Square root | 290.589057 |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 151 |
| Scientific notation | 8.4442 × |
84442 in other forms
| Form | Value |
|---|---|
| In words | eighty-four thousand four hundred and forty-two |
| Binary (base 2) | 10100100111011010 |
| Octal (base 8) | 244732 |
| Hexadecimal (base 16) | 149DA |
| Base 3 | 11021211111 |
| As time | 84442 seconds = 23 h 27 min 22 s |
Is 84442 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (84442 ÷ 2 = 42221) | 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 | 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 4) | 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 6) | 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 84442 a prime number?
No. 84442 = 2 × 42221, so it is divisible by 2.
What are the factors of 84442?
1, 2, 42221, 84442.
What is 84442 in binary?
10100100111011010 (hexadecimal 149DA, octal 244732).
What is the square root of 84442?
About 290.5891.
Is 84442 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 84442?
84442 is a semiprime: 2 × 42221, the product of two primes.