2120040444 has 48 divisors (see below), whose sum is σ = 5215575680. Its totient is φ = 668399040.

The previous prime is 2120040443. The next prime is 2120040449. The reversal of 2120040444 is 4440400212.

It is a self number, because there is not a number n which added to its sum of digits gives 2120040444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120040443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139374 + ... + 153834.

Almost surely, 2^2120040444 is an apocalyptic number.

It is an amenable number.

2120040444 is an abundant number, since it is smaller than the sum of its proper divisors (3095535236).

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

2120040444 is a wasteful number, since it uses less digits than its factorization.

2120040444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15130 (or 15128 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 2120040444 is about 46043.8969245654. The cubic root of 2120040444 is about 1284.6398267867.

Adding to 2120040444 its reverse (4440400212), we get a palindrome (6560440656).

The spelling of 2120040444 in words is "two billion, one hundred twenty million, forty thousand, four hundred forty-four".