42553668 has 12 divisors (see below), whose sum is σ = 99291920. Its totient is φ = 14184552.

The previous prime is 42553649. The next prime is 42553681. The reversal of 42553668 is 86635524.

It is a tau number, because it is divible by the number of its divisors (12).

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, 1773058 + ... + 1773081.

Almost surely, 2^42553668 is an apocalyptic number.

It is an amenable number.

42553668 is an abundant number, since it is smaller than the sum of its proper divisors (56738252).

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

42553668 is a wasteful number, since it uses less digits than its factorization.

42553668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3546146 (or 3546144 counting only the distinct ones).

The product of its digits is 172800, while the sum is 39.

The square root of 42553668 is about 6523.3172542810. The cubic root of 42553668 is about 349.1234337051.

The spelling of 42553668 in words is "forty-two million, five hundred fifty-three thousand, six hundred sixty-eight".