42543788 has 12 divisors (see below), whose sum is σ = 85087632. Its totient is φ = 18233040.

The previous prime is 42543769. The next prime is 42543803. The reversal of 42543788 is 88734524.

42543788 is an admirable 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 3 ways as a sum of consecutive naturals, for example, 759683 + ... + 759738.

It is an arithmetic number, because the mean of its divisors is an integer number (7090636).

Almost surely, 2^42543788 is an apocalyptic number.

It is an amenable number.

42543788 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42543788 is a wasteful number, since it uses less digits than its factorization.

42543788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519432 (or 1519430 counting only the distinct ones).

The product of its digits is 215040, while the sum is 41.

The square root of 42543788 is about 6522.5599268999. The cubic root of 42543788 is about 349.0964120900.

The spelling of 42543788 in words is "forty-two million, five hundred forty-three thousand, seven hundred eighty-eight".