2105400003 has 24 divisors (see below), whose sum is σ = 3457611792. Its totient is φ = 1132314624.

The previous prime is 2105400001. The next prime is 2105400041. The reversal of 2105400003 is 3000045012.

It is not a de Polignac number, because 2105400003 - 2¹ = 2105400001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2105400001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 418750 + ... + 423747.

It is an arithmetic number, because the mean of its divisors is an integer number (144067158).

Almost surely, 2^2105400003 is an apocalyptic number.

2105400003 is a deficient number, since it is larger than the sum of its proper divisors (1352211789).

2105400003 is a wasteful number, since it uses less digits than its factorization.

2105400003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842531 (or 842524 counting only the distinct ones).

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

The square root of 2105400003 is about 45884.6379848419. The cubic root of 2105400003 is about 1281.6758653886.

Adding to 2105400003 its reverse (3000045012), we get a palindrome (5105445015).

The spelling of 2105400003 in words is "two billion, one hundred five million, four hundred thousand, three".