42081458171 has 4 divisors (see below), whose sum is σ = 42266839272. Its totient is φ = 41896077072.

The previous prime is 42081458143. The next prime is 42081458213. The reversal of 42081458171 is 17185418024.

42081458171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42081458171 - 2¹⁰ = 42081457147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42081458101) 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, 92690210 + ... + 92690663.

It is an arithmetic number, because the mean of its divisors is an integer number (10566709818).

Almost surely, 2^42081458171 is an apocalyptic number.

42081458171 is a deficient number, since it is larger than the sum of its proper divisors (185381101).

42081458171 is a wasteful number, since it uses less digits than its factorization.

42081458171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185381100.

The product of its (nonzero) digits is 71680, while the sum is 41.

The spelling of 42081458171 in words is "forty-two billion, eighty-one million, four hundred fifty-eight thousand, one hundred seventy-one".