1274320427 has 2 divisors, whose sum is σ = 1274320428. Its totient is φ = 1274320426.

The previous prime is 1274320381. The next prime is 1274320457. The reversal of 1274320427 is 7240234721.

It is a strong prime.

It is an emirp because it is prime and its reverse (7240234721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1274320427 - 2¹⁸ = 1274058283 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1274320393 and 1274320402.

It is not a weakly prime, because it can be changed into another prime (1274320457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637160213 + 637160214.

It is an arithmetic number, because the mean of its divisors is an integer number (637160214).

Almost surely, 2^1274320427 is an apocalyptic number.

1274320427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1274320427 is an equidigital number, since it uses as much as digits as its factorization.

1274320427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 1274320427 is about 35697.6249490075. The cubic root of 1274320427 is about 1084.1587558478.

The spelling of 1274320427 in words is "one billion, two hundred seventy-four million, three hundred twenty thousand, four hundred twenty-seven".