642442235562 has 24 divisors (see below), whose sum is σ = 1392395062656. Its totient is φ = 214080198696.

The previous prime is 642442235543. The next prime is 642442235627. The reversal of 642442235562 is 265532244246.

642442235562 is a `hidden beast` number, since 6 + 4 + 24 + 42 + 23 + 5 + 562 = 666.

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, 5542138 + ... + 5656869.

It is an arithmetic number, because the mean of its divisors is an integer number (58016460944).

Almost surely, 2^642442235562 is an apocalyptic number.

642442235562 is an abundant number, since it is smaller than the sum of its proper divisors (749952827094).

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

642442235562 is a wasteful number, since it uses less digits than its factorization.

642442235562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11202202 (or 11202199 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 45.

The spelling of 642442235562 in words is "six hundred forty-two billion, four hundred forty-two million, two hundred thirty-five thousand, five hundred sixty-two".