1244423143 has 2 divisors, whose sum is σ = 1244423144. Its totient is φ = 1244423142.

The previous prime is 1244423123. The next prime is 1244423149. The reversal of 1244423143 is 3413244421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1244423143 - 2²⁹ = 707552231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1244423149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622211571 + 622211572.

It is an arithmetic number, because the mean of its divisors is an integer number (622211572).

Almost surely, 2^1244423143 is an apocalyptic number.

1244423143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244423143 is an equidigital number, since it uses as much as digits as its factorization.

1244423143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 28.

The square root of 1244423143 is about 35276.3822266400. The cubic root of 1244423143 is about 1075.6129601074.

Adding to 1244423143 its reverse (3413244421), we get a palindrome (4657667564).

The spelling of 1244423143 in words is "one billion, two hundred forty-four million, four hundred twenty-three thousand, one hundred forty-three".