79690142 has 32 divisors (see below), whose sum is σ = 147329280. Its totient is φ = 31561920.

The previous prime is 79690141. The next prime is 79690189. The reversal of 79690142 is 24109697.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 79690096 and 79690105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79690141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7253 + ... + 14559.

It is an arithmetic number, because the mean of its divisors is an integer number (4604040).

Almost surely, 2^79690142 is an apocalyptic number.

79690142 is a deficient number, since it is larger than the sum of its proper divisors (67639138).

79690142 is a wasteful number, since it uses less digits than its factorization.

79690142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7376.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 79690142 is about 8926.9335160513. The cubic root of 79690142 is about 430.3299108689.

The spelling of 79690142 in words is "seventy-nine million, six hundred ninety thousand, one hundred forty-two".