204121120434 has 32 divisors (see below), whose sum is σ = 508977340416. Its totient is φ = 53018472720.

The previous prime is 204121120417. The next prime is 204121120481. The reversal of 204121120434 is 434021121402.

204121120434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220909842 + ... + 220910765.

It is an arithmetic number, because the mean of its divisors is an integer number (15905541888).

Almost surely, 2^204121120434 is an apocalyptic number.

204121120434 is an abundant number, since it is smaller than the sum of its proper divisors (304856219982).

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

204121120434 is a wasteful number, since it uses less digits than its factorization.

204121120434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441820630.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 204121120434 its reverse (434021121402), we get a palindrome (638142241836).

The spelling of 204121120434 in words is "two hundred four billion, one hundred twenty-one million, one hundred twenty thousand, four hundred thirty-four".