2103450105 has 16 divisors (see below), whose sum is σ = 3411624960. Its totient is φ = 1106471808.

The previous prime is 2103450091. The next prime is 2103450109. The reversal of 2103450105 is 5010543012.

It is a de Polignac number, because none of the positive numbers 2^k-2103450105 is a prime.

It is a super-2 number, since 2×2103450105² = 8849004688449022050, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2103450109) 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 15 ways as a sum of consecutive naturals, for example, 959385 + ... + 961574.

It is an arithmetic number, because the mean of its divisors is an integer number (213226560).

Almost surely, 2^2103450105 is an apocalyptic number.

It is an amenable number.

2103450105 is a deficient number, since it is larger than the sum of its proper divisors (1308174855).

2103450105 is a wasteful number, since it uses less digits than its factorization.

2103450105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921040.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 2103450105 is about 45863.3852326668. The cubic root of 2103450105 is about 1281.2800721714.

Adding to 2103450105 its reverse (5010543012), we get a palindrome (7113993117).

The spelling of 2103450105 in words is "two billion, one hundred three million, four hundred fifty thousand, one hundred five".