2143044420 has 144 divisors (see below), whose sum is σ = 6632273088. Its totient is φ = 512752640.

The previous prime is 2143044413. The next prime is 2143044427. The reversal of 2143044420 is 244403412.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2143044413) and next prime (2143044427).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143044427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12387454 + ... + 12387626.

It is an arithmetic number, because the mean of its divisors is an integer number (46057452).

Almost surely, 2^2143044420 is an apocalyptic number.

2143044420 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 2143044420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3316136544).

2143044420 is an abundant number, since it is smaller than the sum of its proper divisors (4489228668).

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

2143044420 is a wasteful number, since it uses less digits than its factorization.

2143044420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470 (or 331 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 2143044420 is about 46293.0277687688. The cubic root of 2143044420 is about 1289.2695462015.

Adding to 2143044420 its reverse (244403412), we get a palindrome (2387447832).

The spelling of 2143044420 in words is "two billion, one hundred forty-three million, forty-four thousand, four hundred twenty".