2120345304 has 128 divisors (see below), whose sum is σ = 6721228800. Its totient is φ = 541376640.

The previous prime is 2120345291. The next prime is 2120345317. The reversal of 2120345304 is 4035430212.

It is an interprime number because it is at equal distance from previous prime (2120345291) and next prime (2120345317).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99309 + ... + 118755.

It is an arithmetic number, because the mean of its divisors is an integer number (52509600).

Almost surely, 2^2120345304 is an apocalyptic number.

2120345304 is a gapful number since it is divisible by the number (24) 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 2120345304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3360614400).

2120345304 is an abundant number, since it is smaller than the sum of its proper divisors (4600883496).

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

2120345304 is a wasteful number, since it uses less digits than its factorization.

2120345304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19533 (or 19529 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 2120345304 is about 46047.2073420311. The cubic root of 2120345304 is about 1284.7014005377.

Adding to 2120345304 its reverse (4035430212), we get a palindrome (6155775516).

The spelling of 2120345304 in words is "two billion, one hundred twenty million, three hundred forty-five thousand, three hundred four".