79409142 has 24 divisors (see below), whose sum is σ = 182174616. Its totient is φ = 24912576.

The previous prime is 79409119. The next prime is 79409167. The reversal of 79409142 is 24190497.

It is a junction number, because it is equal to n+sod(n) for n = 79409097 and 79409106.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 129448 + ... + 130059.

It is an arithmetic number, because the mean of its divisors is an integer number (7590609).

Almost surely, 2^79409142 is an apocalyptic number.

79409142 is an abundant number, since it is smaller than the sum of its proper divisors (102765474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79409142 is a wasteful number, since it uses less digits than its factorization.

79409142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259532 (or 259529 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 79409142 is about 8911.1807298472. The cubic root of 79409142 is about 429.8235114915.

The spelling of 79409142 in words is "seventy-nine million, four hundred nine thousand, one hundred forty-two".