42644532 has 24 divisors (see below), whose sum is σ = 113718976. Its totient is φ = 12184128.

The previous prime is 42644527. The next prime is 42644543. The reversal of 42644532 is 23544624.

It is a super-2 number, since 2×42644532² = 3637112218998048, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42644532.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253753 + ... + 253920.

Almost surely, 2^42644532 is an apocalyptic number.

42644532 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

42644532 is an abundant number, since it is smaller than the sum of its proper divisors (71074444).

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

42644532 is a wasteful number, since it uses less digits than its factorization.

42644532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507687 (or 507685 counting only the distinct ones).

The product of its digits is 23040, while the sum is 30.

The square root of 42644532 is about 6530.2780951503. The cubic root of 42644532 is about 349.3717491534.

The spelling of 42644532 in words is "forty-two million, six hundred forty-four thousand, five hundred thirty-two".