42076585805 has 4 divisors (see below), whose sum is σ = 50491902972. Its totient is φ = 33661268640.

The previous prime is 42076585787. The next prime is 42076585819. The reversal of 42076585805 is 50858567024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10045251076 + 32031334729 = 100226^2 + 178973^2 .

It is a de Polignac number, because none of the positive numbers 2^k-42076585805 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4207658576 + ... + 4207658585.

It is an arithmetic number, because the mean of its divisors is an integer number (12622975743).

Almost surely, 2^42076585805 is an apocalyptic number.

It is an amenable number.

42076585805 is a deficient number, since it is larger than the sum of its proper divisors (8415317167).

42076585805 is an equidigital number, since it uses as much as digits as its factorization.

42076585805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8415317166.

The product of its (nonzero) digits is 2688000, while the sum is 50.

The spelling of 42076585805 in words is "forty-two billion, seventy-six million, five hundred eighty-five thousand, eight hundred five".