1271012507 has 2 divisors, whose sum is σ = 1271012508. Its totient is φ = 1271012506.

The previous prime is 1271012441. The next prime is 1271012521. The reversal of 1271012507 is 7052101721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1271012507 - 2²⁴ = 1254235291 is a prime.

It is not a weakly prime, because it can be changed into another prime (1271012537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 635506253 + 635506254.

It is an arithmetic number, because the mean of its divisors is an integer number (635506254).

Almost surely, 2^1271012507 is an apocalyptic number.

1271012507 is a deficient number, since it is larger than the sum of its proper divisors (1).

1271012507 is an equidigital number, since it uses as much as digits as its factorization.

1271012507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 980, while the sum is 26.

The square root of 1271012507 is about 35651.2623479169. The cubic root of 1271012507 is about 1083.2198454581.

The spelling of 1271012507 in words is "one billion, two hundred seventy-one million, twelve thousand, five hundred seven".