2040403 has 2 divisors, whose sum is σ = 2040404. Its totient is φ = 2040402.

The previous prime is 2040377. The next prime is 2040407. The reversal of 2040403 is 3040402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2040403 is a prime.

It is not a weakly prime, because it can be changed into another prime (2040407) 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 as a sum of consecutive naturals, namely, 1020201 + 1020202.

It is an arithmetic number, because the mean of its divisors is an integer number (1020202).

2^2040403 is an apocalyptic number.

2040403 is a deficient number, since it is larger than the sum of its proper divisors (1).

2040403 is an equidigital number, since it uses as much as digits as its factorization.

2040403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 2040403 is about 1428.4267569603. The cubic root of 2040403 is about 126.8348650423.

Adding to 2040403 its reverse (3040402), we get a palindrome (5080805).

Subtracting 2040403 from its reverse (3040402), we obtain a palindrome (999999).

The spelling of 2040403 in words is "two million, forty thousand, four hundred three".