2162143 has 4 divisors (see below), whose sum is σ = 2275960. Its totient is φ = 2048328.

The previous prime is 2162137. The next prime is 2162177. The reversal of 2162143 is 3412612.

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-2162143 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 113797 = 2162143 / (2 + 1 + 6 + 2 + 1 + 4 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2162143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2162113) 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, 56880 + ... + 56917.

It is an arithmetic number, because the mean of its divisors is an integer number (568990).

2^2162143 is an apocalyptic number.

2162143 is a deficient number, since it is larger than the sum of its proper divisors (113817).

2162143 is a wasteful number, since it uses less digits than its factorization.

2162143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113816.

The product of its digits is 288, while the sum is 19.

The square root of 2162143 is about 1470.4227283336. The cubic root of 2162143 is about 129.3088168418.

Adding to 2162143 its reverse (3412612), we get a palindrome (5574755).

The spelling of 2162143 in words is "two million, one hundred sixty-two thousand, one hundred forty-three".