The number 71422
71422 is a composite number with 16 divisors. Its prime factorisation is 2 × 13 × 41 × 67. Divisors (16): 1, 2, 13, 26, 41, 67, 82, 134, 533, 871, 1066, 1742, 2747, 5494, 35711, 71422.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
71422 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
71422 is composite. Its prime factorisation is
- 3
The divisors add up to 119952; without 71422 itself that is 48530, so 71422 is deficient (48530 is less than 71422). Euler's totient φ(71422) = 31680 numbers up to 71422 share no factor with it.
- 4
The digits of 71422 add up to 16, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 125 steps to reach 1.
LaTeX source of the formulas on this page
\[ 71422 = 2 \times 13 \times 41 \times 67 \]
71422 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 119952 |
| Euler totient φ(n) | 31680 |
| Square | 5101102084 |
| Cube | 364330913043448 |
| Square root | 267.248948 |
| Digit sum / digital root | 16 / 7 |
| Collatz steps to 1 | 125 |
| Scientific notation | 7.1422 × |
71422 in other forms
| Form | Value |
|---|---|
| In words | seventy-one thousand four hundred and twenty-two |
| Binary (base 2) | 10001011011111110 |
| Octal (base 8) | 213376 |
| Hexadecimal (base 16) | 116FE |
| Base 3 | 10121222021 |
| As time | 71422 seconds = 19 h 50 min 22 s |
Is 71422 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (71422 ÷ 2 = 35711) | 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 6) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 7) | 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 10) | 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 71422 a prime number?
No. 71422 = 2 × 13 × 41 × 67, so it is divisible by 2.
What are the factors of 71422?
1, 2, 13, 26, 41, 67, 82, 134, 533, 871, 1066, 1742, 2747, 5494, 35711, 71422.
What is 71422 in binary?
10001011011111110 (hexadecimal 116FE, octal 213376).
What is the square root of 71422?
About 267.2489.
Is 71422 divisible by 3?
No. Its digits add up to 16, which is not a multiple of 3.
What is special about the number 71422?
It is a composite number with 16 divisors.