85042427039 has 2 divisors, whose sum is σ = 85042427040. Its totient is φ = 85042427038.

The previous prime is 85042427011. The next prime is 85042427081. The reversal of 85042427039 is 93072424058.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85042427039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85042427339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42521213519 + 42521213520.

It is an arithmetic number, because the mean of its divisors is an integer number (42521213520).

Almost surely, 2^85042427039 is an apocalyptic number.

85042427039 is a deficient number, since it is larger than the sum of its proper divisors (1).

85042427039 is an equidigital number, since it uses as much as digits as its factorization.

85042427039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 85042427039 in words is "eighty-five billion, forty-two million, four hundred twenty-seven thousand, thirty-nine".