1002003 has 8 divisors (see below), whose sum is σ = 1406400. Its totient is φ = 632808.

The previous prime is 1001989. The next prime is 1002017. The reversal of 1002003 is 3002001.

1002003 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1001989) and next prime (1002017).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1002003 - 2⁹ = 1001491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1001982 and 1002000.

It is not an unprimeable number, because it can be changed into a prime (1002073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8733 + ... + 8846.

It is an arithmetic number, because the mean of its divisors is an integer number (175800).

2^1002003 is an apocalyptic number.

1002003 is a deficient number, since it is larger than the sum of its proper divisors (404397).

1002003 is a wasteful number, since it uses less digits than its factorization.

1002003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17601.

The product of its (nonzero) digits is 6, while the sum is 6.

The square root of 1002003 is about 1001.0009990005. Note that the first 3 decimals coincide. The cubic root of 1002003 is about 100.0667221383.

Adding to 1002003 its reverse (3002001), we get a palindrome (4004004).

The spelling of 1002003 in words is "one million, two thousand, three".