204239 has 8 divisors (see below), whose sum is σ = 236160. Its totient is φ = 173016.

The previous prime is 204233. The next prime is 204251. The reversal of 204239 is 932402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204239 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1052 + ... + 1230.

It is an arithmetic number, because the mean of its divisors is an integer number (29520).

2²⁰⁴²³⁹ is an apocalyptic number.

204239 is a deficient number, since it is larger than the sum of its proper divisors (31921).

204239 is a wasteful number, since it uses less digits than its factorization.

204239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 204239 is about 451.9280916252. The cubic root of 204239 is about 58.8906333621.

The spelling of 204239 in words is "two hundred four thousand, two hundred thirty-nine".