79900142 has 16 divisors (see below), whose sum is σ = 137264640. Its totient is φ = 34169688.

The previous prime is 79900109. The next prime is 79900151. The reversal of 79900142 is 24100997.

It is a junction number, because it is equal to n+sod(n) for n = 79900099 and 79900108.

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, 959 + ... + 12677.

It is an arithmetic number, because the mean of its divisors is an integer number (8579040).

Almost surely, 2^79900142 is an apocalyptic number.

79900142 is a deficient number, since it is larger than the sum of its proper divisors (57364498).

79900142 is a wasteful number, since it uses less digits than its factorization.

79900142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12215.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 79900142 is about 8938.6879350383. The cubic root of 79900142 is about 430.7075820774.

The spelling of 79900142 in words is "seventy-nine million, nine hundred thousand, one hundred forty-two".