204342999 has 16 divisors (see below), whose sum is σ = 313125120. Its totient is φ = 116112960.

The previous prime is 204342991. The next prime is 204343001. The reversal of 204342999 is 999243402.

204342999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 204342999 - 2³ = 204342991 is a prime.

It is a super-2 number, since 2×204342999² = 83512122480628002, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 204342999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204342991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23422 + ... + 30939.

It is an arithmetic number, because the mean of its divisors is an integer number (19570320).

Almost surely, 2^204342999 is an apocalyptic number.

204342999 is a deficient number, since it is larger than the sum of its proper divisors (108782121).

204342999 is a wasteful number, since it uses less digits than its factorization.

204342999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54550.

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 204342999 is about 14294.8591808384. The cubic root of 204342999 is about 589.0062741762.

The spelling of 204342999 in words is "two hundred four million, three hundred forty-two thousand, nine hundred ninety-nine".