204005103 has 4 divisors (see below), whose sum is σ = 272006808. Its totient is φ = 136003400.

The previous prime is 204005093. The next prime is 204005129. The reversal of 204005103 is 301500402.

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

It is a cyclic number.

It is not a de Polignac number, because 204005103 - 2⁸ = 204004847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204005173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34000848 + ... + 34000853.

It is an arithmetic number, because the mean of its divisors is an integer number (68001702).

Almost surely, 2^204005103 is an apocalyptic number.

204005103 is a deficient number, since it is larger than the sum of its proper divisors (68001705).

204005103 is an equidigital number, since it uses as much as digits as its factorization.

204005103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68001704.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 204005103 is about 14283.0354967003. The cubic root of 204005103 is about 588.6814401708.

Adding to 204005103 its reverse (301500402), we get a palindrome (505505505).

The spelling of 204005103 in words is "two hundred four million, five thousand, one hundred three".