42641644 has 12 divisors (see below), whose sum is σ = 79012584. Its totient is φ = 20066624.

The previous prime is 42641639. The next prime is 42641659. The reversal of 42641644 is 44614624.

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, 313474 + ... + 313609.

It is an arithmetic number, because the mean of its divisors is an integer number (6584382).

Almost surely, 2^42641644 is an apocalyptic number.

It is an amenable number.

42641644 is a deficient number, since it is larger than the sum of its proper divisors (36370940).

42641644 is a wasteful number, since it uses less digits than its factorization.

42641644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627104 (or 627102 counting only the distinct ones).

The product of its digits is 18432, while the sum is 31.

The square root of 42641644 is about 6530.0569675922. The cubic root of 42641644 is about 349.3638621838.

The spelling of 42641644 in words is "forty-two million, six hundred forty-one thousand, six hundred forty-four".