2143143400 has 24 divisors (see below), whose sum is σ = 4982808870. Its totient is φ = 857257280.

The previous prime is 2143143391. The next prime is 2143143421. The reversal of 2143143400 is 43413412.

It can be written as a sum of positive squares in 3 ways, for example, as 1619740516 + 523402884 = 40246^2 + 22878^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5357659 + ... + 5358058.

Almost surely, 2^2143143400 is an apocalyptic number.

2143143400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2143143400 is an abundant number, since it is smaller than the sum of its proper divisors (2839665470).

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

2143143400 is a wasteful number, since it uses less digits than its factorization.

2143143400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10715733 (or 10715724 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 2143143400 is about 46294.0968159008. The cubic root of 2143143400 is about 1289.2893949012.

Adding to 2143143400 its reverse (43413412), we get a palindrome (2186556812).

The spelling of 2143143400 in words is "two billion, one hundred forty-three million, one hundred forty-three thousand, four hundred".