242161864 has 32 divisors (see below), whose sum is σ = 520128000. Its totient is φ = 103541760.

The previous prime is 242161849. The next prime is 242161873. The reversal of 242161864 is 468161242.

242161864 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 7 ways as a sum of consecutive naturals, for example, 20329 + ... + 29959.

It is an arithmetic number, because the mean of its divisors is an integer number (16254000).

Almost surely, 2^242161864 is an apocalyptic number.

It is an amenable number.

242161864 is an abundant number, since it is smaller than the sum of its proper divisors (277966136).

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

242161864 is a wasteful number, since it uses less digits than its factorization.

242161864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10093 (or 10089 counting only the distinct ones).

The product of its digits is 18432, while the sum is 34.

The square root of 242161864 is about 15561.5508224598. The cubic root of 242161864 is about 623.3068747448.

The spelling of 242161864 in words is "two hundred forty-two million, one hundred sixty-one thousand, eight hundred sixty-four".