2143125444 has 96 divisors (see below), whose sum is σ = 5381877760. Its totient is φ = 661737600.

The previous prime is 2143125431. The next prime is 2143125521. The reversal of 2143125444 is 4445213412.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 3101139 + ... + 3101829.

Almost surely, 2^2143125444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2143125444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2690938880).

2143125444 is an abundant number, since it is smaller than the sum of its proper divisors (3238752316).

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

2143125444 is a wasteful number, since it uses less digits than its factorization.

2143125444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001 (or 999 counting only the distinct ones).

The product of its digits is 15360, while the sum is 30.

The square root of 2143125444 is about 46293.9028814811. The cubic root of 2143125444 is about 1289.2857941863.

Adding to 2143125444 its reverse (4445213412), we get a palindrome (6588338856).

The spelling of 2143125444 in words is "two billion, one hundred forty-three million, one hundred twenty-five thousand, four hundred forty-four".