1012003 has 4 divisors (see below), whose sum is σ = 1036728.
Its totient is φ = 987280.
The previous prime is 1011979. The next prime is 1012007. The reversal of 1012003 is 3002101.
It is a semiprime because it is the product of two primes.
It is a de Polignac number, because none of the positive numbers 2k-1012003 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (1012007) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12301 + ... + 12382.
It is an arithmetic number, because the mean of its divisors is an integer number (259182).
21012003 is an apocalyptic number.
1012003 is a deficient number, since it is larger than the sum of its proper divisors (24725).
1012003 is an equidigital number, since it uses as much as digits as its factorization.
1012003 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 24724.
The product of its (nonzero) digits is 6, while the sum is 7.
The square root of 1012003 is about 1005.9835982758.
The cubic root of 1012003 is about 100.3985097899.
Adding to 1012003 its reverse (3002101), we get a palindrome (4014104).
The spelling of 1012003 in words is "one million, twelve thousand, three".