1273320127 has 2 divisors, whose sum is σ = 1273320128. Its totient is φ = 1273320126.

The previous prime is 1273320107. The next prime is 1273320137. The reversal of 1273320127 is 7210233721.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1273320127 is a prime.

It is a super-2 number, since 2×1273320127² = 3242688291646592258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1273320095 and 1273320104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1273320107) 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, 636660063 + 636660064.

It is an arithmetic number, because the mean of its divisors is an integer number (636660064).

Almost surely, 2^1273320127 is an apocalyptic number.

1273320127 is a deficient number, since it is larger than the sum of its proper divisors (1).

1273320127 is an equidigital number, since it uses as much as digits as its factorization.

1273320127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 1273320127 is about 35683.6114624067. The cubic root of 1273320127 is about 1083.8750051611.

Adding to 1273320127 its reverse (7210233721), we get a palindrome (8483553848).

The spelling of 1273320127 in words is "one billion, two hundred seventy-three million, three hundred twenty thousand, one hundred twenty-seven".