204143 has 2 divisors, whose sum is σ = 204144. Its totient is φ = 204142.

The previous prime is 204137. The next prime is 204151. The reversal of 204143 is 341402.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204143 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102071 + 102072.

It is an arithmetic number, because the mean of its divisors is an integer number (102072).

2²⁰⁴¹⁴³ is an apocalyptic number.

204143 is a deficient number, since it is larger than the sum of its proper divisors (1).

204143 is an equidigital number, since it uses as much as digits as its factorization.

204143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 204143 is about 451.8218675540. The cubic root of 204143 is about 58.8814049796.

Adding to 204143 its reverse (341402), we get a palindrome (545545).

The spelling of 204143 in words is "two hundred four thousand, one hundred forty-three", and thus it is an iban number.