2005042103 has 4 divisors (see below), whose sum is σ = 2005155120. Its totient is φ = 2004929088.

The previous prime is 2005042093. The next prime is 2005042121. The reversal of 2005042103 is 3012405002.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2005042103 - 2⁸ = 2005041847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005045103) 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, 23450 + ... + 67527.

It is an arithmetic number, because the mean of its divisors is an integer number (501288780).

Almost surely, 2^2005042103 is an apocalyptic number.

2005042103 is a deficient number, since it is larger than the sum of its proper divisors (113017).

2005042103 is an equidigital number, since it uses as much as digits as its factorization.

2005042103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113016.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 2005042103 is about 44777.6964905521. The cubic root of 2005042103 is about 1260.9789366808.

Adding to 2005042103 its reverse (3012405002), we get a palindrome (5017447105).

The spelling of 2005042103 in words is "two billion, five million, forty-two thousand, one hundred three".