82742571 has 12 divisors (see below), whose sum is σ = 120187080. Its totient is φ = 54852480.

The previous prime is 82742563. The next prime is 82742579. The reversal of 82742571 is 17524728.

82742571 is a `hidden beast` number, since 82 + 7 + 4 + 2 + 571 = 666.

It is an interprime number because it is at equal distance from previous prime (82742563) and next prime (82742579).

It is not a de Polignac number, because 82742571 - 2³ = 82742563 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (82742579) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24070 + ... + 27291.

It is an arithmetic number, because the mean of its divisors is an integer number (10015590).

Almost surely, 2^82742571 is an apocalyptic number.

82742571 is a deficient number, since it is larger than the sum of its proper divisors (37444509).

82742571 is a wasteful number, since it uses less digits than its factorization.

82742571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51546 (or 51543 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 82742571 is about 9096.2943553955. The cubic root of 82742571 is about 435.7556268116.

The spelling of 82742571 in words is "eighty-two million, seven hundred forty-two thousand, five hundred seventy-one".