1296141269 has 2 divisors, whose sum is σ = 1296141270. Its totient is φ = 1296141268.

The previous prime is 1296141263. The next prime is 1296141271. The reversal of 1296141269 is 9621416921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 939422500 + 356718769 = 30650^2 + 18887^2 .

It is an emirp because it is prime and its reverse (9621416921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1296141269 - 2²⁰ = 1295092693 is a prime.

It is a super-2 number, since 2×1296141269² = 3359964378409860722, which contains 22 as substring.

Together with 1296141271, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1296141263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648070634 + 648070635.

It is an arithmetic number, because the mean of its divisors is an integer number (648070635).

Almost surely, 2^1296141269 is an apocalyptic number.

It is an amenable number.

1296141269 is a deficient number, since it is larger than the sum of its proper divisors (1).

1296141269 is an equidigital number, since it uses as much as digits as its factorization.

1296141269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 41.

The square root of 1296141269 is about 36001.9620159791. The cubic root of 1296141269 is about 1090.3119688910.

The spelling of 1296141269 in words is "one billion, two hundred ninety-six million, one hundred forty-one thousand, two hundred sixty-nine".