42439794 has 16 divisors (see below), whose sum is σ = 85350720. Its totient is φ = 14068080.

The previous prime is 42439783. The next prime is 42439823. The reversal of 42439794 is 49793424.

It is a super-2 number, since 2×42439794² = 3602272229524872, which contains 22 as substring.

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, 18454 + ... + 20625.

It is an arithmetic number, because the mean of its divisors is an integer number (5334420).

Almost surely, 2^42439794 is an apocalyptic number.

42439794 is an abundant number, since it is smaller than the sum of its proper divisors (42910926).

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

42439794 is a wasteful number, since it uses less digits than its factorization.

42439794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39265.

The product of its digits is 217728, while the sum is 42.

The square root of 42439794 is about 6514.5831792986. The cubic root of 42439794 is about 348.8117363504.

The spelling of 42439794 in words is "forty-two million, four hundred thirty-nine thousand, seven hundred ninety-four".