79742159 has 12 divisors (see below), whose sum is σ = 94071888. Its totient is φ = 67384800.

The previous prime is 79742147. The next prime is 79742161. The reversal of 79742159 is 95124797.

It is a de Polignac number, because none of the positive numbers 2^k-79742159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79742119) 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, 7982 + ... + 14939.

It is an arithmetic number, because the mean of its divisors is an integer number (7839324).

Almost surely, 2^79742159 is an apocalyptic number.

79742159 is a deficient number, since it is larger than the sum of its proper divisors (14329729).

79742159 is a wasteful number, since it uses less digits than its factorization.

79742159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23006 (or 22999 counting only the distinct ones).

The product of its digits is 158760, while the sum is 44.

The square root of 79742159 is about 8929.8465272366. The cubic root of 79742159 is about 430.4235217880.

The spelling of 79742159 in words is "seventy-nine million, seven hundred forty-two thousand, one hundred fifty-nine".