Q: What is the digital root of 4,200,903

 A: 9

Why is 9 the digital root of the number 4,200,903?

The digital root of a number is calculated by splitting the digits of a number and then adding them together. You keep splitting and adding the digits until you reach a single positive number.

How do you calculate the digital root of 4,200,903?


Split the number up and add each digit together:


4 + 2 + 0 + 0 + 9 + 0 + 3 = 18

If the answer is more than one digit, you would add each digit of the answer together again:

1 + 8 = 9

What is the digital root of number 4,200,903?

Answer: 9


More Examples

Number 4,200,9014,200,9024,200,9044,200,905
Digital Root 7812

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