102499 has 2 divisors, whose sum is σ = 102500. Its totient is φ = 102498.

The previous prime is 102497. The next prime is 102503. The reversal of 102499 is 994201.

102499 is nontrivially palindromic in base 3.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102499 - 2¹ = 102497 is a prime.

Together with 102497, it forms a pair of twin primes.

It is an Ulam number.

It is a plaindrome in base 5.

It is not a weakly prime, because it can be changed into another prime (102497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51249 + 51250.

It is an arithmetic number, because the mean of its divisors is an integer number (51250).

2¹⁰²⁴⁹⁹ is an apocalyptic number.

102499 is a deficient number, since it is larger than the sum of its proper divisors (1).

102499 is an equidigital number, since it uses as much as digits as its factorization.

102499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 102499 is about 320.1546501302. The cubic root of 102499 is about 46.7993559217.

The spelling of 102499 in words is "one hundred two thousand, four hundred ninety-nine".