2143430020 has 24 divisors (see below), whose sum is σ = 4656418200. Its totient is φ = 827807232.

The previous prime is 2143429997. The next prime is 2143430039. The reversal of 2143430020 is 200343412.

It can be written as a sum of positive squares in 4 ways, for example, as 127599616 + 2015830404 = 11296^2 + 44898^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2143430020.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1847205 + ... + 1848364.

It is an arithmetic number, because the mean of its divisors is an integer number (194017425).

Almost surely, 2^2143430020 is an apocalyptic number.

2143430020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2143430020 is an abundant number, since it is smaller than the sum of its proper divisors (2512988180).

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

2143430020 is a wasteful number, since it uses less digits than its factorization.

2143430020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3695607 (or 3695605 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 2143430020 is about 46297.1923554766. The cubic root of 2143430020 is about 1289.3468680586.

Adding to 2143430020 its reverse (200343412), we get a palindrome (2343773432).

The spelling of 2143430020 in words is "two billion, one hundred forty-three million, four hundred thirty thousand, twenty".