1273124513 has 2 divisors, whose sum is σ = 1273124514. Its totient is φ = 1273124512.

The previous prime is 1273124483. The next prime is 1273124519. The reversal of 1273124513 is 3154213721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1180059904 + 93064609 = 34352^2 + 9647^2 .

It is a cyclic number.

It is not a de Polignac number, because 1273124513 - 2¹² = 1273120417 is a prime.

It is not a weakly prime, because it can be changed into another prime (1273124519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636562256 + 636562257.

It is an arithmetic number, because the mean of its divisors is an integer number (636562257).

Almost surely, 2^1273124513 is an apocalyptic number.

It is an amenable number.

1273124513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1273124513 is an equidigital number, since it uses as much as digits as its factorization.

1273124513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 29.

The square root of 1273124513 is about 35680.8704069842. The cubic root of 1273124513 is about 1083.8194988306.

The spelling of 1273124513 in words is "one billion, two hundred seventy-three million, one hundred twenty-four thousand, five hundred thirteen".