1244545427 has 2 divisors, whose sum is σ = 1244545428. Its totient is φ = 1244545426.

The previous prime is 1244545397. The next prime is 1244545453. The reversal of 1244545427 is 7245454421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1244545427 - 2¹⁴ = 1244529043 is a prime.

It is a super-2 number, since 2×1244545427² = 3097786639733224658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1244575427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622272713 + 622272714.

It is an arithmetic number, because the mean of its divisors is an integer number (622272714).

Almost surely, 2^1244545427 is an apocalyptic number.

1244545427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244545427 is an equidigital number, since it uses as much as digits as its factorization.

1244545427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 179200, while the sum is 38.

The square root of 1244545427 is about 35278.1154116826. The cubic root of 1244545427 is about 1075.6481908749.

Adding to 1244545427 its reverse (7245454421), we get a palindrome (8489999848).

The spelling of 1244545427 in words is "one billion, two hundred forty-four million, five hundred forty-five thousand, four hundred twenty-seven".