102543 has 16 divisors (see below), whose sum is σ = 165120. Its totient is φ = 55296.

The previous prime is 102539. The next prime is 102547. The reversal of 102543 is 345201.

It is an interprime number because it is at equal distance from previous prime (102539) and next prime (102547).

It is not a de Polignac number, because 102543 - 2² = 102539 is a prime.

It is an Ulam number.

102543 is a lucky number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102547) 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, 271 + ... + 527.

It is an arithmetic number, because the mean of its divisors is an integer number (10320).

2¹⁰²⁵⁴³ is an apocalyptic number.

102543 is a deficient number, since it is larger than the sum of its proper divisors (62577).

102543 is a wasteful number, since it uses less digits than its factorization.

102543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 102543 is about 320.2233595477. The cubic root of 102543 is about 46.8060515222.

Adding to 102543 its reverse (345201), we get a palindrome (447744).

The spelling of 102543 in words is "one hundred two thousand, five hundred forty-three".