204249 has 8 divisors (see below), whose sum is σ = 275392. Its totient is φ = 134640.

The previous prime is 204233. The next prime is 204251. The reversal of 204249 is 942402.

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

It is not a de Polignac number, because 204249 - 2⁴ = 204233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22 + ... + 639.

It is an arithmetic number, because the mean of its divisors is an integer number (34424).

2²⁰⁴²⁴⁹ is an apocalyptic number.

It is an amenable number.

204249 is a deficient number, since it is larger than the sum of its proper divisors (71143).

204249 is a wasteful number, since it uses less digits than its factorization.

204249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767.

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

The square root of 204249 is about 451.9391551968. The cubic root of 204249 is about 58.8915944856.

The spelling of 204249 in words is "two hundred four thousand, two hundred forty-nine".