85729124 has 24 divisors (see below), whose sum is σ = 164310720. Its totient is φ = 38895264.

The previous prime is 85729109. The next prime is 85729139. The reversal of 85729124 is 42192758.

It is an interprime number because it is at equal distance from previous prime (85729109) and next prime (85729139).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10904 + ... + 17039.

It is an arithmetic number, because the mean of its divisors is an integer number (6846280).

Almost surely, 2^85729124 is an apocalyptic number.

It is an amenable number.

85729124 is a deficient number, since it is larger than the sum of its proper divisors (78581596).

85729124 is a wasteful number, since it uses less digits than its factorization.

85729124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28019 (or 28017 counting only the distinct ones).

The product of its digits is 40320, while the sum is 38.

The square root of 85729124 is about 9259.0023220647. The cubic root of 85729124 is about 440.9365793726.

The spelling of 85729124 in words is "eighty-five million, seven hundred twenty-nine thousand, one hundred twenty-four".