204242585 has 8 divisors (see below), whose sum is σ = 245170176. Its totient is φ = 163341360.

The previous prime is 204242537. The next prime is 204242587. The reversal of 204242585 is 585242402.

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

It is not a de Polignac number, because 204242585 - 2⁸ = 204242329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204242587) 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, 20840 + ... + 29030.

It is an arithmetic number, because the mean of its divisors is an integer number (30646272).

Almost surely, 2^204242585 is an apocalyptic number.

It is an amenable number.

204242585 is a deficient number, since it is larger than the sum of its proper divisors (40927591).

204242585 is an equidigital number, since it uses as much as digits as its factorization.

204242585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13183.

The product of its (nonzero) digits is 25600, while the sum is 32.

The square root of 204242585 is about 14291.3465075898. The cubic root of 204242585 is about 588.9097792848.

Adding to 204242585 its reverse (585242402), we get a palindrome (789484987).

The spelling of 204242585 in words is "two hundred four million, two hundred forty-two thousand, five hundred eighty-five".