1272497459 has 2 divisors, whose sum is σ = 1272497460. Its totient is φ = 1272497458.

The previous prime is 1272497453. The next prime is 1272497491. The reversal of 1272497459 is 9547942721.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (9547942721) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1272497459 is a prime.

It is a super-2 number, since 2×1272497459² = 3238499566322913362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1272497453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636248729 + 636248730.

It is an arithmetic number, because the mean of its divisors is an integer number (636248730).

Almost surely, 2^1272497459 is an apocalyptic number.

1272497459 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272497459 is an equidigital number, since it uses as much as digits as its factorization.

1272497459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 50.

The square root of 1272497459 is about 35672.0823474044. The cubic root of 1272497459 is about 1083.6415311737.

The spelling of 1272497459 in words is "one billion, two hundred seventy-two million, four hundred ninety-seven thousand, four hundred fifty-nine".