204042189 has 16 divisors (see below), whose sum is σ = 293251392. Its totient is φ = 125449728.

The previous prime is 204042127. The next prime is 204042203. The reversal of 204042189 is 981240402.

It is not a de Polignac number, because 204042189 - 2¹³ = 204033997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204042389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64642 + ... + 67724.

It is an arithmetic number, because the mean of its divisors is an integer number (18328212).

Almost surely, 2^204042189 is an apocalyptic number.

It is an amenable number.

204042189 is a deficient number, since it is larger than the sum of its proper divisors (89209203).

204042189 is a wasteful number, since it uses less digits than its factorization.

204042189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4796.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 204042189 is about 14284.3336911457. Note that the first 3 decimals coincide. The cubic root of 204042189 is about 588.7171100581.

The spelling of 204042189 in words is "two hundred four million, forty-two thousand, one hundred eighty-nine".