242564 has 12 divisors (see below), whose sum is σ = 485184. Its totient is φ = 103944.

The previous prime is 242551. The next prime is 242591. The reversal of 242564 is 465242.

242564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

242564 is an admirable number.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 242564.

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, 4304 + ... + 4359.

It is an arithmetic number, because the mean of its divisors is an integer number (40432).

2²⁴²⁵⁶⁴ is an apocalyptic number.

It is an amenable number.

242564 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

242564 is a wasteful number, since it uses less digits than its factorization.

242564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8674 (or 8672 counting only the distinct ones).

The product of its digits is 1920, while the sum is 23.

The square root of 242564 is about 492.5078679575. The cubic root of 242564 is about 62.3651706794.

The spelling of 242564 in words is "two hundred forty-two thousand, five hundred sixty-four".