2120654405 has 16 divisors (see below), whose sum is σ = 2611699200. Its totient is φ = 1652443200.

The previous prime is 2120654401. The next prime is 2120654413. The reversal of 2120654405 is 5044560212.

It is not a de Polignac number, because 2120654405 - 2² = 2120654401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120654401) 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, 821 + ... + 65130.

It is an arithmetic number, because the mean of its divisors is an integer number (163231200).

Almost surely, 2^2120654405 is an apocalyptic number.

It is an amenable number.

2120654405 is a deficient number, since it is larger than the sum of its proper divisors (491044795).

2120654405 is a wasteful number, since it uses less digits than its factorization.

2120654405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66124.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 2120654405 is about 46050.5635687556. The cubic root of 2120654405 is about 1284.7638248343.

The spelling of 2120654405 in words is "two billion, one hundred twenty million, six hundred fifty-four thousand, four hundred five".