204534123 has 16 divisors (see below), whose sum is σ = 289277856. Its totient is φ = 128102400.

The previous prime is 204534119. The next prime is 204534131. The reversal of 204534123 is 321435402.

204534123 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 204534123 - 2² = 204534119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204534093 and 204534102.

It is not an unprimeable number, because it can be changed into a prime (204534023) 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, 27315 + ... + 33987.

It is an arithmetic number, because the mean of its divisors is an integer number (18079866).

Almost surely, 2^204534123 is an apocalyptic number.

204534123 is a deficient number, since it is larger than the sum of its proper divisors (84743733).

204534123 is a wasteful number, since it uses less digits than its factorization.

204534123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7294.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 204534123 is about 14301.5426790259. The cubic root of 204534123 is about 589.1898513919.

Adding to 204534123 its reverse (321435402), we get a palindrome (525969525).

The spelling of 204534123 in words is "two hundred four million, five hundred thirty-four thousand, one hundred twenty-three".