79663042 has 8 divisors (see below), whose sum is σ = 119667132. Its totient is φ = 39774000.

The previous prime is 79663021. The next prime is 79663049. The reversal of 79663042 is 24036697.

It can be written as a sum of positive squares in 2 ways, for example, as 78127921 + 1535121 = 8839^2 + 1239^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 79662992 and 79663010.

It is not an unprimeable number, because it can be changed into a prime (79663049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27009 + ... + 29812.

Almost surely, 2^79663042 is an apocalyptic number.

79663042 is a deficient number, since it is larger than the sum of its proper divisors (40004090).

79663042 is a wasteful number, since it uses less digits than its factorization.

79663042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57524.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 79663042 is about 8925.4155085352. The cubic root of 79663042 is about 430.2811249819.

The spelling of 79663042 in words is "seventy-nine million, six hundred sixty-three thousand, forty-two".