1421043443 has 2 divisors, whose sum is σ = 1421043444. Its totient is φ = 1421043442.

The previous prime is 1421043391. The next prime is 1421043469. The reversal of 1421043443 is 3443401241.

It is an a-pointer prime, because the next prime (1421043469) can be obtained adding 1421043443 to its sum of digits (26).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1421043443 - 2⁸ = 1421043187 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1421043493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710521721 + 710521722.

It is an arithmetic number, because the mean of its divisors is an integer number (710521722).

Almost surely, 2^1421043443 is an apocalyptic number.

1421043443 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421043443 is an equidigital number, since it uses as much as digits as its factorization.

1421043443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 1421043443 is about 37696.7298714358. The cubic root of 1421043443 is about 1124.2661071604.

Adding to 1421043443 its reverse (3443401241), we get a palindrome (4864444684).

The spelling of 1421043443 in words is "one billion, four hundred twenty-one million, forty-three thousand, four hundred forty-three".