1002403 has 2 divisors, whose sum is σ = 1002404. Its totient is φ = 1002402.

The previous prime is 1002377. The next prime is 1002427. The reversal of 1002403 is 3042001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1002403.

It is not a weakly prime, because it can be changed into another prime (1002433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501201 + 501202.

It is an arithmetic number, because the mean of its divisors is an integer number (501202).

2^1002403 is an apocalyptic number.

1002403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002403 is an equidigital number, since it uses as much as digits as its factorization.

1002403 is an evil number, because the sum of its binary digits is even.

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

The square root of 1002403 is about 1001.2007790648. The cubic root of 1002403 is about 100.0800359254.

Adding to 1002403 its reverse (3042001), we get a palindrome (4044404).

The spelling of 1002403 in words is "one million, two thousand, four hundred three".