2120423115 has 16 divisors (see below), whose sum is σ = 3419394048. Its totient is φ = 1121986656.

The previous prime is 2120423111. The next prime is 2120423143. The reversal of 2120423115 is 5113240212.

It is not a de Polignac number, because 2120423115 - 2² = 2120423111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2120423091 and 2120423100.

It is not an unprimeable number, because it can be changed into a prime (2120423111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 554637 + ... + 558446.

It is an arithmetic number, because the mean of its divisors is an integer number (213712128).

Almost surely, 2^2120423115 is an apocalyptic number.

2120423115 is a deficient number, since it is larger than the sum of its proper divisors (1298970933).

2120423115 is a wasteful number, since it uses less digits than its factorization.

2120423115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113218.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 2120423115 is about 46048.0522389384. The cubic root of 2120423115 is about 1284.7171153802.

Adding to 2120423115 its reverse (5113240212), we get a palindrome (7233663327).

The spelling of 2120423115 in words is "two billion, one hundred twenty million, four hundred twenty-three thousand, one hundred fifteen".