79142544 has 120 divisors (see below), whose sum is σ = 242470592. Its totient is φ = 23950080.

The previous prime is 79142533. The next prime is 79142551. The reversal of 79142544 is 44524197.

It is a happy number.

79142544 is a `hidden beast` number, since 79 + 1 + 42 + 544 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 79142499 and 79142508.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 125109 + ... + 125739.

Almost surely, 2^79142544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79142544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121235296).

79142544 is an abundant number, since it is smaller than the sum of its proper divisors (163328048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79142544 is a wasteful number, since it uses less digits than its factorization.

79142544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725 (or 716 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 79142544 is about 8896.2095299065. The cubic root of 79142544 is about 429.3419608707.

The spelling of 79142544 in words is "seventy-nine million, one hundred forty-two thousand, five hundred forty-four".