2105420315 has 16 divisors (see below), whose sum is σ = 2593563840. Its totient is φ = 1639802880.

The previous prime is 2105420311. The next prime is 2105420333. The reversal of 2105420315 is 5130245012.

It is not a de Polignac number, because 2105420315 - 2² = 2105420311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2105420311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89291 + ... + 110379.

It is an arithmetic number, because the mean of its divisors is an integer number (162097740).

Almost surely, 2^2105420315 is an apocalyptic number.

2105420315 is a deficient number, since it is larger than the sum of its proper divisors (488143525).

2105420315 is a wasteful number, since it uses less digits than its factorization.

2105420315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21622.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2105420315 is about 45884.8593220029. The cubic root of 2105420315 is about 1281.6799870625.

Adding to 2105420315 its reverse (5130245012), we get a palindrome (7235665327).

The spelling of 2105420315 in words is "two billion, one hundred five million, four hundred twenty thousand, three hundred fifteen".