Is 420 a deficient number and what is its deficiency?

Is 420 a deficient number?

Here we will explain and calculate if 420 is a deficient number and its deficiency if applicable.

420 is a deficient number if the sum of its proper divisors is less than 420.

The sum of its proper divisors is calculated as follows: 1 + 2 + 3 + 4 + 5 + 6 + 7 + 10 + 12 + 14 + 15 + 20 + 21 + 28 + 30 + 35 + 42 + 60 + 70 + 84 + 105 + 140 + 210 = 924.

924 is not less than 420. Therefore, 420 is not a deficient number.

The deficiency of 420 is 420 minus the sum of its proper divisors. Thus, the deficiency of 420 is 420 - 924 = No Deficiency

Deficient Calculator
You can enter another number here to check if it is a deficient number:

Is 421 a deficient number?
Go here for the next number on our list. Is it deficient?