2102403 has 4 divisors (see below), whose sum is σ = 2803208. Its totient is φ = 1401600.

The previous prime is 2102383. The next prime is 2102411. The reversal of 2102403 is 3042012.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2102403 - 2¹⁸ = 1840259 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2100403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350398 + ... + 350403.

It is an arithmetic number, because the mean of its divisors is an integer number (700802).

2^2102403 is an apocalyptic number.

2102403 is a deficient number, since it is larger than the sum of its proper divisors (700805).

2102403 is an equidigital number, since it uses as much as digits as its factorization.

2102403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700804.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 2102403 is about 1449.9665513383. The cubic root of 2102403 is about 128.1067428279.

Adding to 2102403 its reverse (3042012), we get a palindrome (5144415).

The spelling of 2102403 in words is "two million, one hundred two thousand, four hundred three".