79720742 has 16 divisors (see below), whose sum is σ = 122392512. Its totient is φ = 38927040.

The previous prime is 79720733. The next prime is 79720757. The reversal of 79720742 is 24702797.

It is a junction number, because it is equal to n+sod(n) for n = 79720696 and 79720705.

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, 76658 + ... + 77690.

It is an arithmetic number, because the mean of its divisors is an integer number (7649532).

Almost surely, 2^79720742 is an apocalyptic number.

79720742 is a deficient number, since it is larger than the sum of its proper divisors (42671770).

79720742 is a wasteful number, since it uses less digits than its factorization.

79720742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1903.

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 79720742 is about 8928.6472659636. The cubic root of 79720742 is about 430.3849842228.

The spelling of 79720742 in words is "seventy-nine million, seven hundred twenty thousand, seven hundred forty-two".