42664232 has 16 divisors (see below), whose sum is σ = 86149140. Its totient is φ = 19691136.

The previous prime is 42664229. The next prime is 42664261. The reversal of 42664232 is 23246624.

It can be written as a sum of positive squares in 2 ways, for example, as 41396356 + 1267876 = 6434^2 + 1126^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42664195 and 42664204.

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, 205013 + ... + 205220.

Almost surely, 2^42664232 is an apocalyptic number.

It is an amenable number.

42664232 is an abundant number, since it is smaller than the sum of its proper divisors (43484908).

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

42664232 is a wasteful number, since it uses less digits than its factorization.

42664232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410252 (or 410248 counting only the distinct ones).

The product of its digits is 13824, while the sum is 29.

The square root of 42664232 is about 6531.7862794185. The cubic root of 42664232 is about 349.4255392767.

The spelling of 42664232 in words is "forty-two million, six hundred sixty-four thousand, two hundred thirty-two".