1272003503 has 2 divisors, whose sum is σ = 1272003504. Its totient is φ = 1272003502.

The previous prime is 1272003457. The next prime is 1272003521. The reversal of 1272003503 is 3053002721.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1272003503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1272002503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636001751 + 636001752.

It is an arithmetic number, because the mean of its divisors is an integer number (636001752).

Almost surely, 2^1272003503 is an apocalyptic number.

1272003503 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272003503 is an equidigital number, since it uses as much as digits as its factorization.

1272003503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 1272003503 is about 35665.1581098416. The cubic root of 1272003503 is about 1083.5012976228.

The spelling of 1272003503 in words is "one billion, two hundred seventy-two million, three thousand, five hundred three".