42520253634 has 24 divisors (see below), whose sum is σ = 96976017840. Its totient is φ = 13427448408.

The previous prime is 42520253627. The next prime is 42520253693. The reversal of 42520253634 is 43635202524.

42520253634 is a `hidden beast` number, since 42 + 52 + 0 + 2 + 536 + 34 = 666.

42520253634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62163772 + ... + 62164455.

It is an arithmetic number, because the mean of its divisors is an integer number (4040667410).

Almost surely, 2^42520253634 is an apocalyptic number.

42520253634 is an abundant number, since it is smaller than the sum of its proper divisors (54455764206).

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

42520253634 is a wasteful number, since it uses less digits than its factorization.

42520253634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124328254 (or 124328251 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

The spelling of 42520253634 in words is "forty-two billion, five hundred twenty million, two hundred fifty-three thousand, six hundred thirty-four".