79157542 has 16 divisors (see below), whose sum is σ = 126223920. Its totient is φ = 37101568.

The previous prime is 79157531. The next prime is 79157557. The reversal of 79157542 is 24575197.

It is a junction number, because it is equal to n+sod(n) for n = 79157495 and 79157504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4209 + ... + 13267.

It is an arithmetic number, because the mean of its divisors is an integer number (7888995).

Almost surely, 2^79157542 is an apocalyptic number.

79157542 is a deficient number, since it is larger than the sum of its proper divisors (47066378).

79157542 is a wasteful number, since it uses less digits than its factorization.

79157542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9335.

The product of its digits is 88200, while the sum is 40.

The square root of 79157542 is about 8897.0524332500. The cubic root of 79157542 is about 429.3690801405.

The spelling of 79157542 in words is "seventy-nine million, one hundred fifty-seven thousand, five hundred forty-two".