204123426 has 32 divisors (see below), whose sum is σ = 443560320. Its totient is φ = 62248704.

The previous prime is 204123401. The next prime is 204123427. The reversal of 204123426 is 624321402.

It is a junction number, because it is equal to n+sod(n) for n = 204123396 and 204123405.

It is not an unprimeable number, because it can be changed into a prime (204123427) 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, 2766 + ... + 20393.

It is an arithmetic number, because the mean of its divisors is an integer number (13861260).

Almost surely, 2^204123426 is an apocalyptic number.

204123426 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

204123426 is an abundant number, since it is smaller than the sum of its proper divisors (239436894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204123426 is a wasteful number, since it uses less digits than its factorization.

204123426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23290.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 204123426 is about 14287.1769779757. The cubic root of 204123426 is about 588.7952299581.

Adding to 204123426 its reverse (624321402), we get a palindrome (828444828).

The spelling of 204123426 in words is "two hundred four million, one hundred twenty-three thousand, four hundred twenty-six".