2120435455 has 16 divisors (see below), whose sum is σ = 2559320064. Its totient is φ = 1686514720.

The previous prime is 2120435431. The next prime is 2120435509. The reversal of 2120435455 is 5545340212.

It is not a de Polignac number, because 2120435455 - 2⁷ = 2120435327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 662910 + ... + 666100.

It is an arithmetic number, because the mean of its divisors is an integer number (159957504).

Almost surely, 2^2120435455 is an apocalyptic number.

2120435455 is a deficient number, since it is larger than the sum of its proper divisors (438884609).

2120435455 is a wasteful number, since it uses less digits than its factorization.

2120435455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3926.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 2120435455 is about 46048.1862292099. The cubic root of 2120435455 is about 1284.7196075524.

Adding to 2120435455 its reverse (5545340212), we get a palindrome (7665775667).

The spelling of 2120435455 in words is "two billion, one hundred twenty million, four hundred thirty-five thousand, four hundred fifty-five".