2120324240 has 40 divisors (see below), whose sum is σ = 4945364280. Its totient is φ = 845444096.

The previous prime is 2120324237. The next prime is 2120324243. The reversal of 2120324240 is 424230212.

It is an interprime number because it is at equal distance from previous prime (2120324237) and next prime (2120324243).

It can be written as a sum of positive squares in 4 ways, for example, as 8737936 + 2111586304 = 2956^2 + 45952^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (2120324243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16445 + ... + 67164.

It is an arithmetic number, because the mean of its divisors is an integer number (123634107).

Almost surely, 2^2120324240 is an apocalyptic number.

2120324240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120324240 is an abundant number, since it is smaller than the sum of its proper divisors (2825040040).

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

2120324240 is a wasteful number, since it uses less digits than its factorization.

2120324240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83939 (or 83933 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 2120324240 is about 46046.9786196662. The cubic root of 2120324240 is about 1284.6971463501.

Adding to 2120324240 its reverse (424230212), we get a palindrome (2544554452).

The spelling of 2120324240 in words is "two billion, one hundred twenty million, three hundred twenty-four thousand, two hundred forty".