204006045 has 16 divisors (see below), whose sum is σ = 330543360. Its totient is φ = 107425344.

The previous prime is 204006043. The next prime is 204006079. The reversal of 204006045 is 540600402.

It is a happy number.

It is not a de Polignac number, because 204006045 - 2¹ = 204006043 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204006041) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 84894 + ... + 87263.

It is an arithmetic number, because the mean of its divisors is an integer number (20658960).

Almost surely, 2^204006045 is an apocalyptic number.

It is an amenable number.

204006045 is a deficient number, since it is larger than the sum of its proper divisors (126537315).

204006045 is a wasteful number, since it uses less digits than its factorization.

204006045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172244.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 204006045 is about 14283.0684728457. The cubic root of 204006045 is about 588.6823462545.

Adding to 204006045 its reverse (540600402), we get a palindrome (744606447).

The spelling of 204006045 in words is "two hundred four million, six thousand, forty-five".