Sum of Digits of 129
ANSWER : 12
The sum of the digits in the number 129 is: 1 + 2 + 9 = 12
How to Calculate the Digit Sum of 129?
To find the sum of digits of a number, simply break it into individual digits and add them. For 129:
1 + 2 + 9 = 12
The digits of 129 are: 1, 2, 9.
Their sum is: 12
Step-by-Step Digit Sum of 129
We split the number 129 into its individual digits: 1 + 2 + 9 = 12
Digit Positions in 129
| Position | Digit |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 9 |
Length of 129
The number 129 has 3 digits.
Is 12 a Prime Number?
No, 12 is not a prime number.
Digit Sums in Other Bases
- Binary: 10000001 → 2
- Octal: 201 → 3
- Hexadecimal: 81 → 9