Is 1420 a deficient number and what is its deficiency?

Is 1420 a deficient number?

Here we will explain and calculate if 1420 is a deficient number and its deficiency if applicable.

1420 is a deficient number if the sum of its proper divisors is less than 1420.

The sum of its proper divisors is calculated as follows: 1 + 2 + 4 + 5 + 10 + 20 + 71 + 142 + 284 + 355 + 710 = 1604.

1604 is not less than 1420. Therefore, 1420 is not a deficient number.

The deficiency of 1420 is 1420 minus the sum of its proper divisors. Thus, the deficiency of 1420 is 1420 - 1604 = No Deficiency

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