204121042 has 16 divisors (see below), whose sum is σ = 314147232. Its totient is φ = 99413280.

The previous prime is 204121037. The next prime is 204121051. The reversal of 204121042 is 240121402.

204121042 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62953 + ... + 66115.

It is an arithmetic number, because the mean of its divisors is an integer number (19634202).

Almost surely, 2^204121042 is an apocalyptic number.

204121042 is a deficient number, since it is larger than the sum of its proper divisors (110026190).

204121042 is a wasteful number, since it uses less digits than its factorization.

204121042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3993.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 204121042 is about 14287.0935462746. The cubic root of 204121042 is about 588.7929377285.

Adding to 204121042 its reverse (240121402), we get a palindrome (444242444).

The spelling of 204121042 in words is "two hundred four million, one hundred twenty-one thousand, forty-two".