2120254545 has 32 divisors (see below), whose sum is σ = 3420184320. Its totient is φ = 1121575680.

The previous prime is 2120254523. The next prime is 2120254561. The reversal of 2120254545 is 5454520212.

It is not a de Polignac number, because 2120254545 - 2⁷ = 2120254417 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2076135 + ... + 2077155.

It is an arithmetic number, because the mean of its divisors is an integer number (106880760).

Almost surely, 2^2120254545 is an apocalyptic number.

It is an amenable number.

2120254545 is a deficient number, since it is larger than the sum of its proper divisors (1299929775).

2120254545 is a wasteful number, since it uses less digits than its factorization.

2120254545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025.

The product of its (nonzero) digits is 16000, while the sum is 30.

The square root of 2120254545 is about 46046.2218319810. The cubic root of 2120254545 is about 1284.6830702092.

Adding to 2120254545 its reverse (5454520212), we get a palindrome (7574774757).

The spelling of 2120254545 in words is "two billion, one hundred twenty million, two hundred fifty-four thousand, five hundred forty-five".