42643652 has 12 divisors (see below), whose sum is σ = 74687760. Its totient is φ = 21304296.

The previous prime is 42643637. The next prime is 42643661. The reversal of 42643652 is 25634624.

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, 2183 + ... + 9489.

It is an arithmetic number, because the mean of its divisors is an integer number (6223980).

Almost surely, 2^42643652 is an apocalyptic number.

It is an amenable number.

42643652 is a deficient number, since it is larger than the sum of its proper divisors (32044108).

42643652 is a wasteful number, since it uses less digits than its factorization.

42643652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8770 (or 8768 counting only the distinct ones).

The product of its digits is 34560, while the sum is 32.

The square root of 42643652 is about 6530.2107163552. The cubic root of 42643652 is about 349.3693459594.

Subtracting from 42643652 its reverse (25634624), we obtain a triangular number (17009028 = T₅₈₃₂).

The spelling of 42643652 in words is "forty-two million, six hundred forty-three thousand, six hundred fifty-two".