42491604 has 24 divisors (see below), whose sum is σ = 99257760. Its totient is φ = 14148064.

The previous prime is 42491597. The next prime is 42491689. The reversal of 42491604 is 40619424.

It is a congruent number.

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, 15187 + ... + 17765.

It is an arithmetic number, because the mean of its divisors is an integer number (4135740).

Almost surely, 2^42491604 is an apocalyptic number.

It is an amenable number.

42491604 is an abundant number, since it is smaller than the sum of its proper divisors (56766156).

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

42491604 is a wasteful number, since it uses less digits than its factorization.

42491604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3959 (or 3957 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 42491604 is about 6518.5584295916. The cubic root of 42491604 is about 348.9536203806.

The spelling of 42491604 in words is "forty-two million, four hundred ninety-one thousand, six hundred four".