204102144 has 60 divisors (see below), whose sum is σ = 589065906. Its totient is φ = 68032512.

The previous prime is 204102131. The next prime is 204102163. The reversal of 204102144 is 441201402.

It can be written as a sum of positive squares in only one way, i.e., 138297600 + 65804544 = 11760^2 + 8112^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17539 + ... + 26754.

Almost surely, 2^204102144 is an apocalyptic number.

204102144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

204102144 is an abundant number, since it is smaller than the sum of its proper divisors (384963762).

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

204102144 is an equidigital number, since it uses as much as digits as its factorization.

204102144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44317 (or 44298 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 204102144 is about 14286.4321648199. The cubic root of 204102144 is about 588.7747665620.

Adding to 204102144 its reverse (441201402), we get a palindrome (645303546).

The spelling of 204102144 in words is "two hundred four million, one hundred two thousand, one hundred forty-four".