204001105 has 64 divisors (see below), whose sum is σ = 328458240. Its totient is φ = 117734400.

The previous prime is 204001097. The next prime is 204001123. The reversal of 204001105 is 501100402.

It is not a de Polignac number, because 204001105 - 2³ = 204001097 is a prime.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 464476 + ... + 464914.

It is an arithmetic number, because the mean of its divisors is an integer number (5132160).

Almost surely, 2^204001105 is an apocalyptic number.

It is an amenable number.

204001105 is a deficient number, since it is larger than the sum of its proper divisors (124457135).

204001105 is a wasteful number, since it uses less digits than its factorization.

204001105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 204001105 is about 14282.8955397706. The cubic root of 204001105 is about 588.6775945746.

Adding to 204001105 its reverse (501100402), we get a palindrome (705101507).

The spelling of 204001105 in words is "two hundred four million, one thousand, one hundred five".