42945868 has 24 divisors (see below), whose sum is σ = 88855200. Its totient is φ = 17770368.

The previous prime is 42945829. The next prime is 42945869. The reversal of 42945868 is 86854924.

42945868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (42945869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25633 + ... + 27256.

It is an arithmetic number, because the mean of its divisors is an integer number (3702300).

Almost surely, 2^42945868 is an apocalyptic number.

It is an amenable number.

42945868 is an abundant number, since it is smaller than the sum of its proper divisors (45909332).

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

42945868 is a wasteful number, since it uses less digits than its factorization.

42945868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52929 (or 52927 counting only the distinct ones).

The product of its digits is 552960, while the sum is 46.

The square root of 42945868 is about 6553.3096981602. The cubic root of 42945868 is about 350.1927319455.

The spelling of 42945868 in words is "forty-two million, nine hundred forty-five thousand, eight hundred sixty-eight".