Sum of Digits of 421
ANSWER : 7
The sum of the digits in the number 421 is: 4 + 2 + 1 = 7
How to Calculate the Digit Sum of 421?
To find the sum of digits of a number, simply break it into individual digits and add them. For 421:
4 + 2 + 1 = 7
The digits of 421 are: 4, 2, 1.
Their sum is: 7
Step-by-Step Digit Sum of 421
We split the number 421 into its individual digits: 4 + 2 + 1 = 7
Digit Positions in 421
| Position | Digit |
|---|---|
| 1 | 4 |
| 2 | 2 |
| 3 | 1 |
Length of 421
The number 421 has 3 digits.
Is 7 a Prime Number?
Yes, 7 is a prime number.
Digit Sums in Other Bases
- Binary: 110100101 → 5
- Octal: 645 → 15
- Hexadecimal: 1A5 → 16