42543564 has 36 divisors (see below), whose sum is σ = 115476984. Its totient is φ = 12155136.

The previous prime is 42543547. The next prime is 42543581. The reversal of 42543564 is 46534524.

It is an interprime number because it is at equal distance from previous prime (42543547) and next prime (42543581).

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 11 ways as a sum of consecutive naturals, for example, 35589 + ... + 36764.

It is an arithmetic number, because the mean of its divisors is an integer number (3207694).

Almost surely, 2^42543564 is an apocalyptic number.

It is an amenable number.

42543564 is an abundant number, since it is smaller than the sum of its proper divisors (72933420).

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

42543564 is a wasteful number, since it uses less digits than its factorization.

42543564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72374 (or 72365 counting only the distinct ones).

The product of its digits is 57600, while the sum is 33.

The square root of 42543564 is about 6522.5427557050. The cubic root of 42543564 is about 349.0957994057.

The spelling of 42543564 in words is "forty-two million, five hundred forty-three thousand, five hundred sixty-four".