102403 has 4 divisors (see below), whose sum is σ = 117040. Its totient is φ = 87768.

The previous prime is 102397. The next prime is 102407. The reversal of 102403 is 304201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 304201 = 107 ⋅2843.

It is a cyclic number.

It is not a de Polignac number, because 102403 - 2⁹ = 101891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102403.

It is not an unprimeable number, because it can be changed into a prime (102407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7308 + ... + 7321.

It is an arithmetic number, because the mean of its divisors is an integer number (29260).

2¹⁰²⁴⁰³ is an apocalyptic number.

102403 is a deficient number, since it is larger than the sum of its proper divisors (14637).

102403 is an equidigital number, since it uses as much as digits as its factorization.

102403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14636.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 102403 is about 320.0046874657. The cubic root of 102403 is about 46.7847406847.

Adding to 102403 its reverse (304201), we get a palindrome (406604).

It can be divided in two parts, 102 and 403, that added together give a palindrome (505).

The spelling of 102403 in words is "one hundred two thousand, four hundred three", and thus it is an iban number.