2143995043 has 4 divisors (see below), whose sum is σ = 2145033360. Its totient is φ = 2142956728.

The previous prime is 2143995037. The next prime is 2143995053. The reversal of 2143995043 is 3405993412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2143995043 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2143994987 and 2143995005.

It is not an unprimeable number, because it can be changed into a prime (2143995013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 516055 + ... + 520192.

It is an arithmetic number, because the mean of its divisors is an integer number (536258340).

Almost surely, 2^2143995043 is an apocalyptic number.

2143995043 is a deficient number, since it is larger than the sum of its proper divisors (1038317).

2143995043 is a wasteful number, since it uses less digits than its factorization.

2143995043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038316.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 2143995043 is about 46303.2940836826. The cubic root of 2143995043 is about 1289.4601516935.

The spelling of 2143995043 in words is "two billion, one hundred forty-three million, nine hundred ninety-five thousand, forty-three".