204159 has 4 divisors (see below), whose sum is σ = 272216. Its totient is φ = 136104.

The previous prime is 204151. The next prime is 204161. The reversal of 204159 is 951402.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 204159 - 2³ = 204151 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34024 + ... + 34029.

It is an arithmetic number, because the mean of its divisors is an integer number (68054).

2²⁰⁴¹⁵⁹ is an apocalyptic number.

204159 is a deficient number, since it is larger than the sum of its proper divisors (68057).

204159 is an equidigital number, since it uses as much as digits as its factorization.

204159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68056.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 204159 is about 451.8395733001. The cubic root of 204159 is about 58.8829432442.

It can be divided in two parts, 204 and 159, that added together give a palindrome (363).

The spelling of 204159 in words is "two hundred four thousand, one hundred fifty-nine".