1275012493 has 2 divisors, whose sum is σ = 1275012494. Its totient is φ = 1275012492.

The previous prime is 1275012469. The next prime is 1275012509. The reversal of 1275012493 is 3942105721.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 683404164 + 591608329 = 26142^2 + 24323^2 .

It is an emirp because it is prime and its reverse (3942105721) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1275012493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1275012413) 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, 637506246 + 637506247.

It is an arithmetic number, because the mean of its divisors is an integer number (637506247).

Almost surely, 2^1275012493 is an apocalyptic number.

It is an amenable number.

1275012493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1275012493 is an equidigital number, since it uses as much as digits as its factorization.

1275012493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 1275012493 is about 35707.3170792766. The cubic root of 1275012493 is about 1084.3549842613.

The spelling of 1275012493 in words is "one billion, two hundred seventy-five million, twelve thousand, four hundred ninety-three".