1244365427 has 2 divisors, whose sum is σ = 1244365428. Its totient is φ = 1244365426.

The previous prime is 1244365417. The next prime is 1244365459. The reversal of 1244365427 is 7245634421.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (7245634421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1244365427 - 2⁴ = 1244365411 is a prime.

It is not a weakly prime, because it can be changed into another prime (1244365417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622182713 + 622182714.

It is an arithmetic number, because the mean of its divisors is an integer number (622182714).

Almost surely, 2^1244365427 is an apocalyptic number.

1244365427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244365427 is an equidigital number, since it uses as much as digits as its factorization.

1244365427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 38.

The square root of 1244365427 is about 35275.5641627459. The cubic root of 1244365427 is about 1075.5963309735.

Adding to 1244365427 its reverse (7245634421), we get a palindrome (8489999848).

The spelling of 1244365427 in words is "one billion, two hundred forty-four million, three hundred sixty-five thousand, four hundred twenty-seven".