242904 has 32 divisors (see below), whose sum is σ = 630000. Its totient is φ = 77952.

The previous prime is 242887. The next prime is 242911. The reversal of 242904 is 409242.

It is a congruent number.

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, 522 + ... + 870.

2²⁴²⁹⁰⁴ is an apocalyptic number.

242904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 242904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (315000).

242904 is an abundant number, since it is smaller than the sum of its proper divisors (387096).

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

242904 is a wasteful number, since it uses less digits than its factorization.

242904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 242904 is about 492.8529192366. The cubic root of 242904 is about 62.3942959941.

It can be divided in two parts, 24 and 2904, that multiplied together give a palindrome (69696).

The spelling of 242904 in words is "two hundred forty-two thousand, nine hundred four".