42002002044439 has 2 divisors, whose sum is σ = 42002002044440. Its totient is φ = 42002002044438.

The previous prime is 42002002044437. The next prime is 42002002044511. The reversal of 42002002044439 is 93444020020024.

42002002044439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42002002044439 - 2¹ = 42002002044437 is a prime.

Together with 42002002044437, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42002002044433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21001001022219 + 21001001022220.

It is an arithmetic number, because the mean of its divisors is an integer number (21001001022220).

Almost surely, 2^{42002002044439} is an apocalyptic number.

42002002044439 is a deficient number, since it is larger than the sum of its proper divisors (1).

42002002044439 is an equidigital number, since it uses as much as digits as its factorization.

42002002044439 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 34.

The spelling of 42002002044439 in words is "forty-two trillion, two billion, two million, forty-four thousand, four hundred thirty-nine".