2543143 has 2 divisors, whose sum is σ = 2543144. Its totient is φ = 2543142.

The previous prime is 2543141. The next prime is 2543153. The reversal of 2543143 is 3413452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2543143 - 2¹ = 2543141 is a prime.

Together with 2543141, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2543141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1271571 + 1271572.

It is an arithmetic number, because the mean of its divisors is an integer number (1271572).

2^2543143 is an apocalyptic number.

2543143 is a deficient number, since it is larger than the sum of its proper divisors (1).

2543143 is an equidigital number, since it uses as much as digits as its factorization.

2543143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 22.

The square root of 2543143 is about 1594.7234870033. The cubic root of 2543143 is about 136.4971531740.

Adding to 2543143 its reverse (3413452), we get a palindrome (5956595).

The spelling of 2543143 in words is "two million, five hundred forty-three thousand, one hundred forty-three".