42543884 has 12 divisors (see below), whose sum is σ = 74498424. Its totient is φ = 21258624.

The previous prime is 42543881. The next prime is 42543931. The reversal of 42543884 is 48834524.

It is not an unprimeable number, because it can be changed into a prime (42543881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8627 + ... + 12629.

It is an arithmetic number, because the mean of its divisors is an integer number (6208202).

Almost surely, 2^42543884 is an apocalyptic number.

It is an amenable number.

42543884 is a deficient number, since it is larger than the sum of its proper divisors (31954540).

42543884 is a wasteful number, since it uses less digits than its factorization.

42543884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6664 (or 6662 counting only the distinct ones).

The product of its digits is 122880, while the sum is 38.

The square root of 42543884 is about 6522.5672859695. The cubic root of 42543884 is about 349.0966746684.

The spelling of 42543884 in words is "forty-two million, five hundred forty-three thousand, eight hundred eighty-four".