204102105 has 8 divisors (see below), whose sum is σ = 326563392. Its totient is φ = 108854448.

The previous prime is 204102097. The next prime is 204102121. The reversal of 204102105 is 501201402.

204102105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 204102105 - 2³ = 204102097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 13606807 = 204102105 / (2 + 0 + 4 + 1 + 0 + 2 + 1 + 0 + 5).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6803389 + ... + 6803418.

It is an arithmetic number, because the mean of its divisors is an integer number (40820424).

Almost surely, 2^204102105 is an apocalyptic number.

It is an amenable number.

204102105 is a deficient number, since it is larger than the sum of its proper divisors (122461287).

204102105 is a wasteful number, since it uses less digits than its factorization.

204102105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13606815.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 204102105 is about 14286.4307998884. The cubic root of 204102105 is about 588.7747290608.

Adding to 204102105 its reverse (501201402), we get a palindrome (705303507).

The spelling of 204102105 in words is "two hundred four million, one hundred two thousand, one hundred five".