Is 1240 a deficient number and what is its deficiency?

Is 1240 a deficient number?

Here we will explain and calculate if 1240 is a deficient number and its deficiency if applicable.

1240 is a deficient number if the sum of its proper divisors is less than 1240.

The sum of its proper divisors is calculated as follows: 1 + 2 + 4 + 5 + 8 + 10 + 20 + 31 + 40 + 62 + 124 + 155 + 248 + 310 + 620 = 1640.

1640 is not less than 1240. Therefore, 1240 is not a deficient number.

The deficiency of 1240 is 1240 minus the sum of its proper divisors. Thus, the deficiency of 1240 is 1240 - 1640 = No Deficiency

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