Is 135 a deficient number and what is its deficiency?

Is 135 a deficient number?

Here we will explain and calculate if 135 is a deficient number and its deficiency if applicable.

135 is a deficient number if the sum of its proper divisors is less than 135.

The sum of its proper divisors is calculated as follows: 1 + 3 + 5 + 9 + 15 + 27 + 45 = 105.

105 is less than 135. Therefore, 135 is a deficient number.

The deficiency of 135 is 135 minus the sum of its proper divisors. Thus, the deficiency of 135 is 135 - 105 = 30

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