42565404 has 24 divisors (see below), whose sum is σ = 113507968. Its totient is φ = 12161520.

The previous prime is 42565403. The next prime is 42565427. The reversal of 42565404 is 40456524.

42565404 is nontrivially palindromic in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42565403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253282 + ... + 253449.

Almost surely, 2^42565404 is an apocalyptic number.

It is an amenable number.

42565404 is an abundant number, since it is smaller than the sum of its proper divisors (70942564).

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

42565404 is a wasteful number, since it uses less digits than its factorization.

42565404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506745 (or 506743 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 42565404 is about 6524.2167345973. The cubic root of 42565404 is about 349.1555260111.

The spelling of 42565404 in words is "forty-two million, five hundred sixty-five thousand, four hundred four".