102643 has 2 divisors, whose sum is σ = 102644. Its totient is φ = 102642.

The previous prime is 102611. The next prime is 102647. The reversal of 102643 is 346201.

It is a strong prime.

It is an emirp because it is prime and its reverse (346201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102643 - 2⁵ = 102611 is a prime.

102643 is a lucky number.

It is a nialpdrome in base 6.

It is not a weakly prime, because it can be changed into another prime (102647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51321 + 51322.

It is an arithmetic number, because the mean of its divisors is an integer number (51322).

2¹⁰²⁶⁴³ is an apocalyptic number.

102643 is a deficient number, since it is larger than the sum of its proper divisors (1).

102643 is an equidigital number, since it uses as much as digits as its factorization.

102643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 102643 is about 320.3794625128. The cubic root of 102643 is about 46.8212616762.

Adding to 102643 its reverse (346201), we get a palindrome (448844).

The spelling of 102643 in words is "one hundred two thousand, six hundred forty-three".