204102133 has 4 divisors (see below), whose sum is σ = 204251308. Its totient is φ = 203952960.

The previous prime is 204102131. The next prime is 204102163. The reversal of 204102133 is 331201402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 125283249 + 78818884 = 11193^2 + 8878^2 .

It is a cyclic number.

It is not a de Polignac number, because 204102133 - 2¹ = 204102131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204102131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72516 + ... + 75277.

It is an arithmetic number, because the mean of its divisors is an integer number (51062827).

Almost surely, 2^204102133 is an apocalyptic number.

It is an amenable number.

204102133 is a deficient number, since it is larger than the sum of its proper divisors (149175).

204102133 is a wasteful number, since it uses less digits than its factorization.

204102133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149174.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 204102133 is about 14286.4317798392. The cubic root of 204102133 is about 588.7747559847.

Adding to 204102133 its reverse (331201402), we get a palindrome (535303535).

The spelling of 204102133 in words is "two hundred four million, one hundred two thousand, one hundred thirty-three".