208143 has 16 divisors (see below), whose sum is σ = 332640. Its totient is φ = 127872.

The previous prime is 208141. The next prime is 208147. The reversal of 208143 is 341802.

It is a happy number.

It is not a de Polignac number, because 208143 - 2¹ = 208141 is a prime.

208143 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55 + ... + 647.

It is an arithmetic number, because the mean of its divisors is an integer number (20790).

2²⁰⁸¹⁴³ is an apocalyptic number.

208143 is a deficient number, since it is larger than the sum of its proper divisors (124497).

208143 is a wasteful number, since it uses less digits than its factorization.

208143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615 (or 609 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 208143 is about 456.2269172243. The cubic root of 208143 is about 59.2634963647.

Adding to 208143 its product of nonzero digits (192), we get a triangular number (208335 = T₆₄₅).

Adding to 208143 its reverse (341802), we get a palindrome (549945).

It can be divided in two parts, 208 and 143, that added together give a triangular number (351 = T₂₆).

The spelling of 208143 in words is "two hundred eight thousand, one hundred forty-three".