Is 423 a deficient number and what is its deficiency?

Is 423 a deficient number?

Here we will explain and calculate if 423 is a deficient number and its deficiency if applicable.

423 is a deficient number if the sum of its proper divisors is less than 423.

The sum of its proper divisors is calculated as follows: 1 + 3 + 9 + 47 + 141 = 201.

201 is less than 423. Therefore, 423 is a deficient number.

The deficiency of 423 is 423 minus the sum of its proper divisors. Thus, the deficiency of 423 is 423 - 201 = 222

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