79000042 has 8 divisors (see below), whose sum is σ = 129272832. Its totient is φ = 35909100.

The previous prime is 79000021. The next prime is 79000087. The reversal of 79000042 is 24000097.

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

It is a super-4 number, since 4×79000042⁴ (a number of 33 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 3590911 = 79000042 / (7 + 9 + 0 + 0 + 0 + 0 + 4 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 78999977 and 79000022.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1795434 + ... + 1795477.

It is an arithmetic number, because the mean of its divisors is an integer number (16159104).

Almost surely, 2^79000042 is an apocalyptic number.

79000042 is a deficient number, since it is larger than the sum of its proper divisors (50272790).

79000042 is a wasteful number, since it uses less digits than its factorization.

79000042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3590924.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 79000042 is about 8888.1967799999. The cubic root of 79000042 is about 429.0841187428.

Subtracting from 79000042 its reverse (24000097), we obtain a palindrome (54999945).

The spelling of 79000042 in words is "seventy-nine million, forty-two", and thus it is an aban number and an uban number.