42442864 has 20 divisors (see below), whose sum is σ = 82349640. Its totient is φ = 21191360.

The previous prime is 42442859. The next prime is 42442879. The reversal of 42442864 is 46824424.

It is a congruent number.

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, 13647 + ... + 16465.

It is an arithmetic number, because the mean of its divisors is an integer number (4117482).

Almost surely, 2^42442864 is an apocalyptic number.

It is an amenable number.

42442864 is a deficient number, since it is larger than the sum of its proper divisors (39906776).

42442864 is a wasteful number, since it uses less digits than its factorization.

42442864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3768 (or 3762 counting only the distinct ones).

The product of its digits is 49152, while the sum is 34.

The square root of 42442864 is about 6514.8188002430. The cubic root of 42442864 is about 348.8201469018.

The spelling of 42442864 in words is "forty-two million, four hundred forty-two thousand, eight hundred sixty-four".