79406042 has 8 divisors (see below), whose sum is σ = 120740916. Its totient is φ = 39159072.

The previous prime is 79406039. The next prime is 79406057. The reversal of 79406042 is 24060497.

It can be written as a sum of positive squares in 2 ways, for example, as 79405921 + 121 = 8911^2 + 11^2 .

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

It is a super-2 number, since 2×79406042² = 12610639012211528, which contains 22 as substring.

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, 271793 + ... + 272084.

Almost surely, 2^79406042 is an apocalyptic number.

79406042 is a deficient number, since it is larger than the sum of its proper divisors (41334874).

79406042 is a wasteful number, since it uses less digits than its factorization.

79406042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543952.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 79406042 is about 8911.0067893589. The cubic root of 79406042 is about 429.8179182219.

It can be divided in two parts, 7 and 9406042, that added together give a palindrome (9406049).

The spelling of 79406042 in words is "seventy-nine million, four hundred six thousand, forty-two".