1423044421 has 2 divisors, whose sum is σ = 1423044422. Its totient is φ = 1423044420.

The previous prime is 1423044361. The next prime is 1423044433. The reversal of 1423044421 is 1244403241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1095941025 + 327103396 = 33105^2 + 18086^2 .

It is an emirp because it is prime and its reverse (1244403241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1423044421 - 2¹³ = 1423036229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1423048421) 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, 711522210 + 711522211.

It is an arithmetic number, because the mean of its divisors is an integer number (711522211).

Almost surely, 2^1423044421 is an apocalyptic number.

It is an amenable number.

1423044421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423044421 is an equidigital number, since it uses as much as digits as its factorization.

1423044421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 1423044421 is about 37723.2610069702. The cubic root of 1423044421 is about 1124.7935544802.

Adding to 1423044421 its reverse (1244403241), we get a palindrome (2667447662).

The spelling of 1423044421 in words is "one billion, four hundred twenty-three million, forty-four thousand, four hundred twenty-one".