2120659420 has 96 divisors (see below), whose sum is σ = 4971456000. Its totient is φ = 753350400.

The previous prime is 2120659399. The next prime is 2120659433. The reversal of 2120659420 is 249560212.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 2582610 + ... + 2583430.

It is an arithmetic number, because the mean of its divisors is an integer number (51786000).

Almost surely, 2^2120659420 is an apocalyptic number.

2120659420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2120659420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2485728000).

2120659420 is an abundant number, since it is smaller than the sum of its proper divisors (2850796580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2120659420 is a wasteful number, since it uses less digits than its factorization.

2120659420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099 (or 1097 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 2120659420 is about 46050.6180197400. The cubic root of 2120659420 is about 1284.7648375855.

The spelling of 2120659420 in words is "two billion, one hundred twenty million, six hundred fifty-nine thousand, four hundred twenty".