2105340172 has 24 divisors (see below), whose sum is σ = 3969472752. Its totient is φ = 971275200.

The previous prime is 2105340151. The next prime is 2105340187. The reversal of 2105340172 is 2710435012.

It is a happy 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, 135147 + ... + 149917.

It is an arithmetic number, because the mean of its divisors is an integer number (165394698).

Almost surely, 2^2105340172 is an apocalyptic number.

It is an amenable number.

2105340172 is a deficient number, since it is larger than the sum of its proper divisors (1864132580).

2105340172 is a wasteful number, since it uses less digits than its factorization.

2105340172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17529 (or 17527 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 2105340172 is about 45883.9860081924. The cubic root of 2105340172 is about 1281.6637244376.

Adding to 2105340172 its reverse (2710435012), we get a palindrome (4815775184).

The spelling of 2105340172 in words is "two billion, one hundred five million, three hundred forty thousand, one hundred seventy-two".