42555568 has 20 divisors (see below), whose sum is σ = 89947368. Its totient is φ = 19343360.

The previous prime is 42555523. The next prime is 42555571. The reversal of 42555568 is 86555524.

It is a self number, because there is not a number n which added to its sum of digits gives 42555568.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120721 + ... + 121072.

Almost surely, 2^42555568 is an apocalyptic number.

It is an amenable number.

42555568 is an abundant number, since it is smaller than the sum of its proper divisors (47391800).

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

42555568 is a wasteful number, since it uses less digits than its factorization.

42555568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241812 (or 241806 counting only the distinct ones).

The product of its digits is 240000, while the sum is 40.

The square root of 42555568 is about 6523.4628840823. The cubic root of 42555568 is about 349.1286296900.

The spelling of 42555568 in words is "forty-two million, five hundred fifty-five thousand, five hundred sixty-eight".