42442806533 has 2 divisors, whose sum is σ = 42442806534. Its totient is φ = 42442806532.

The previous prime is 42442806517. The next prime is 42442806569. The reversal of 42442806533 is 33560824424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40758360769 + 1684445764 = 201887^2 + 41042^2 .

It is a cyclic number.

It is not a de Polignac number, because 42442806533 - 2⁴ = 42442806517 is a prime.

It is a super-3 number, since 3×42442806533³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42442806433) 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, 21221403266 + 21221403267.

It is an arithmetic number, because the mean of its divisors is an integer number (21221403267).

Almost surely, 2^42442806533 is an apocalyptic number.

It is an amenable number.

42442806533 is a deficient number, since it is larger than the sum of its proper divisors (1).

42442806533 is an equidigital number, since it uses as much as digits as its factorization.

42442806533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 552960, while the sum is 41.

The spelling of 42442806533 in words is "forty-two billion, four hundred forty-two million, eight hundred six thousand, five hundred thirty-three".