42043444133 has 2 divisors, whose sum is σ = 42043444134. Its totient is φ = 42043444132.

The previous prime is 42043444111. The next prime is 42043444153. The reversal of 42043444133 is 33144434024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27589874404 + 14453569729 = 166102^2 + 120223^2 .

It is a cyclic number.

It is not a de Polignac number, because 42043444133 - 2¹⁰ = 42043443109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42043444133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42043444103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21021722066 + 21021722067.

It is an arithmetic number, because the mean of its divisors is an integer number (21021722067).

Almost surely, 2^42043444133 is an apocalyptic number.

It is an amenable number.

42043444133 is a deficient number, since it is larger than the sum of its proper divisors (1).

42043444133 is an equidigital number, since it uses as much as digits as its factorization.

42043444133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 42043444133 its reverse (33144434024), we get a palindrome (75187878157).

The spelling of 42043444133 in words is "forty-two billion, forty-three million, four hundred forty-four thousand, one hundred thirty-three".