204342305 has 16 divisors (see below), whose sum is σ = 253200384. Its totient is φ = 158195520.

The previous prime is 204342293. The next prime is 204342337. The reversal of 204342305 is 503243402.

It is not a de Polignac number, because 204342305 - 2¹² = 204338209 is a prime.

It is a super-3 number, since 3×204342305³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32444 + ... + 38226.

It is an arithmetic number, because the mean of its divisors is an integer number (15825024).

Almost surely, 2^204342305 is an apocalyptic number.

It is an amenable number.

204342305 is a deficient number, since it is larger than the sum of its proper divisors (48858079).

204342305 is a wasteful number, since it uses less digits than its factorization.

204342305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6016.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 204342305 is about 14294.8349063569. The cubic root of 204342305 is about 589.0056073712.

Adding to 204342305 its reverse (503243402), we get a palindrome (707585707).

The spelling of 204342305 in words is "two hundred four million, three hundred forty-two thousand, three hundred five".