1002103 has 4 divisors (see below), whose sum is σ = 1005928.
Its totient is φ = 998280.
The previous prime is 1002101. The next prime is 1002109. The reversal of 1002103 is 3012001.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 1002103 - 21 = 1002101 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1002101) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1488 + ... + 2053.
It is an arithmetic number, because the mean of its divisors is an integer number (251482).
21002103 is an apocalyptic number.
1002103 is a deficient number, since it is larger than the sum of its proper divisors (3825).
1002103 is an equidigital number, since it uses as much as digits as its factorization.
1002103 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3824.
The product of its (nonzero) digits is 6, while the sum is 7.
The square root of 1002103 is about 1001.0509477544.
The cubic root of 1002103 is about 100.0700509172.
Adding to 1002103 its reverse (3012001), we get a palindrome (4014104).
The spelling of 1002103 in words is "one million, two thousand, one hundred three".