42434421443 has 2 divisors, whose sum is σ = 42434421444. Its totient is φ = 42434421442.

The previous prime is 42434421437. The next prime is 42434421467. The reversal of 42434421443 is 34412443424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42434421443 - 2²⁰ = 42433372867 is a prime.

It is not a weakly prime, because it can be changed into another prime (42434421643) 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, 21217210721 + 21217210722.

It is an arithmetic number, because the mean of its divisors is an integer number (21217210722).

Almost surely, 2^42434421443 is an apocalyptic number.

42434421443 is a deficient number, since it is larger than the sum of its proper divisors (1).

42434421443 is an equidigital number, since it uses as much as digits as its factorization.

42434421443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 147456, while the sum is 35.

Adding to 42434421443 its reverse (34412443424), we get a palindrome (76846864867).

The spelling of 42434421443 in words is "forty-two billion, four hundred thirty-four million, four hundred twenty-one thousand, four hundred forty-three".