42444212113 has 2 divisors, whose sum is σ = 42444212114. Its totient is φ = 42444212112.

The previous prime is 42444212093. The next prime is 42444212189. The reversal of 42444212113 is 31121244424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41382951184 + 1061260929 = 203428^2 + 32577^2 .

It is a cyclic number.

It is not a de Polignac number, because 42444212113 - 2¹⁷ = 42444081041 is a prime.

It is a super-2 number, since 2×42444212113² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42444210113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21222106056 + 21222106057.

It is an arithmetic number, because the mean of its divisors is an integer number (21222106057).

Almost surely, 2^42444212113 is an apocalyptic number.

It is an amenable number.

42444212113 is a deficient number, since it is larger than the sum of its proper divisors (1).

42444212113 is an equidigital number, since it uses as much as digits as its factorization.

42444212113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6144, while the sum is 28.

Adding to 42444212113 its reverse (31121244424), we get a palindrome (73565456537).

The spelling of 42444212113 in words is "forty-two billion, four hundred forty-four million, two hundred twelve thousand, one hundred thirteen".