204043345 has 16 divisors (see below), whose sum is σ = 274333248. Its totient is φ = 144383040.

The previous prime is 204043319. The next prime is 204043349. The reversal of 204043345 is 543340402.

It is not a de Polignac number, because 204043345 - 2⁹ = 204042833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204043349) 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, 48099 + ... + 52168.

It is an arithmetic number, because the mean of its divisors is an integer number (17145828).

Almost surely, 2^204043345 is an apocalyptic number.

It is an amenable number.

204043345 is a deficient number, since it is larger than the sum of its proper divisors (70289903).

204043345 is a wasteful number, since it uses less digits than its factorization.

204043345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100320.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 204043345 is about 14284.3741549989. The cubic root of 204043345 is about 588.7182218473.

Adding to 204043345 its reverse (543340402), we get a palindrome (747383747).

The spelling of 204043345 in words is "two hundred four million, forty-three thousand, three hundred forty-five".