42471128191 has 4 divisors (see below), whose sum is σ = 42476024800. Its totient is φ = 42466231584.

The previous prime is 42471128179. The next prime is 42471128209. The reversal of 42471128191 is 19182117424.

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

It is a cyclic number.

It is not a de Polignac number, because 42471128191 - 2¹¹ = 42471126143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42471128131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2435271 + ... + 2452648.

It is an arithmetic number, because the mean of its divisors is an integer number (10619006200).

Almost surely, 2^42471128191 is an apocalyptic number.

42471128191 is a deficient number, since it is larger than the sum of its proper divisors (4896609).

42471128191 is an equidigital number, since it uses as much as digits as its factorization.

42471128191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4896608.

The product of its digits is 32256, while the sum is 40.

The spelling of 42471128191 in words is "forty-two billion, four hundred seventy-one million, one hundred twenty-eight thousand, one hundred ninety-one".