42385043089 has 2 divisors, whose sum is σ = 42385043090. Its totient is φ = 42385043088.

The previous prime is 42385043081. The next prime is 42385043131. The reversal of 42385043089 is 98034058324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40745441025 + 1639602064 = 201855^2 + 40492^2 .

It is a cyclic number.

It is not a de Polignac number, because 42385043089 - 2³ = 42385043081 is a prime.

It is not a weakly prime, because it can be changed into another prime (42385043081) 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, 21192521544 + 21192521545.

It is an arithmetic number, because the mean of its divisors is an integer number (21192521545).

Almost surely, 2^42385043089 is an apocalyptic number.

It is an amenable number.

42385043089 is a deficient number, since it is larger than the sum of its proper divisors (1).

42385043089 is an equidigital number, since it uses as much as digits as its factorization.

42385043089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 42385043089 in words is "forty-two billion, three hundred eighty-five million, forty-three thousand, eighty-nine".