The number 77043
77043 is a composite number with 8 divisors. Its prime factorisation is 3 × 61 × 421. Divisors (8): 1, 3, 61, 183, 421, 1263, 25681, 77043.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
77043 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
77043 is composite. Its prime factorisation is
- 3
The divisors add up to 104656; without 77043 itself that is 27613, so 77043 is deficient (27613 is less than 77043). Euler's totient φ(77043) = 50400 numbers up to 77043 share no factor with it.
- 4
The digits of 77043 add up to 21, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 107 steps to reach 1.
LaTeX source of the formulas on this page
\[ 77043 = 3 \times 61 \times 421 \]
77043 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 104656 |
| Euler totient φ(n) | 50400 |
| Square | 5935623849 |
| Cube | 457298268198507 |
| Square root | 277.566208 |
| Digit sum / digital root | 21 / 3 |
| Collatz steps to 1 | 107 |
| Scientific notation | 7.7043 × |
77043 in other forms
| Form | Value |
|---|---|
| In words | seventy-seven thousand and forty-three |
| Binary (base 2) | 10010110011110011 |
| Octal (base 8) | 226363 |
| Hexadecimal (base 16) | 12CF3 |
| Base 3 | 10220200110 |
| As time | 77043 seconds = 21 h 24 min 3 s |
Is 77043 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | No (remainder 1) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (77043 ÷ 3 = 25681) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 3) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 3) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 3) | 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 3) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 3) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 3) | 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 3) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 77043 a prime number?
No. 77043 = 3 × 61 × 421, so it is divisible by 3.
What are the factors of 77043?
1, 3, 61, 183, 421, 1263, 25681, 77043.
What is 77043 in binary?
10010110011110011 (hexadecimal 12CF3, octal 226363).
What is the square root of 77043?
About 277.5662.
Is 77043 divisible by 3?
Yes. Its digits add up to 21, a multiple of 3.
What is special about the number 77043?
It is a composite number with 8 divisors.