204121144 has 16 divisors (see below), whose sum is σ = 387028800. Its totient is φ = 100913472.

The previous prime is 204121133. The next prime is 204121201. The reversal of 204121144 is 441121402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142632 + ... + 144055.

It is an arithmetic number, because the mean of its divisors is an integer number (24189300).

Almost surely, 2^204121144 is an apocalyptic number.

It is an amenable number.

204121144 is a deficient number, since it is larger than the sum of its proper divisors (182907656).

204121144 is a wasteful number, since it uses less digits than its factorization.

204121144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286782 (or 286778 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 204121144 is about 14287.0971159295. The cubic root of 204121144 is about 588.7930358025.

Adding to 204121144 its reverse (441121402), we get a palindrome (645242546).

The spelling of 204121144 in words is "two hundred four million, one hundred twenty-one thousand, one hundred forty-four".