Is 1071 a deficient number and what is its deficiency?

Is 1071 a deficient number?

Here we will explain and calculate if 1071 is a deficient number and its deficiency if applicable.

1071 is a deficient number if the sum of its proper divisors is less than 1071.

The sum of its proper divisors is calculated as follows: 1 + 3 + 7 + 9 + 17 + 21 + 51 + 63 + 119 + 153 + 357 = 801.

801 is less than 1071. Therefore, 1071 is a deficient number.

The deficiency of 1071 is 1071 minus the sum of its proper divisors. Thus, the deficiency of 1071 is 1071 - 801 = 270

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