1242503303 has 2 divisors, whose sum is σ = 1242503304. Its totient is φ = 1242503302.

The previous prime is 1242503299. The next prime is 1242503321. The reversal of 1242503303 is 3033052421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1242503303 - 2² = 1242503299 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242503333) 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 as a sum of consecutive naturals, namely, 621251651 + 621251652.

It is an arithmetic number, because the mean of its divisors is an integer number (621251652).

Almost surely, 2^1242503303 is an apocalyptic number.

1242503303 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242503303 is an equidigital number, since it uses as much as digits as its factorization.

1242503303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 1242503303 is about 35249.1603162402. The cubic root of 1242503303 is about 1075.0595396624.

Adding to 1242503303 its reverse (3033052421), we get a palindrome (4275555724).

The spelling of 1242503303 in words is "one billion, two hundred forty-two million, five hundred three thousand, three hundred three".