42317871 has 4 divisors (see below), whose sum is σ = 56423832. Its totient is φ = 28211912.

The previous prime is 42317867. The next prime is 42317887. The reversal of 42317871 is 17871324.

It is a happy number.

42317871 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 42317871 - 2² = 42317867 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42317831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7052976 + ... + 7052981.

It is an arithmetic number, because the mean of its divisors is an integer number (14105958).

Almost surely, 2^42317871 is an apocalyptic number.

42317871 is a deficient number, since it is larger than the sum of its proper divisors (14105961).

42317871 is a wasteful number, since it uses less digits than its factorization.

42317871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14105960.

The product of its digits is 9408, while the sum is 33.

The square root of 42317871 is about 6505.2187511259. The cubic root of 42317871 is about 348.4773884811.

The spelling of 42317871 in words is "forty-two million, three hundred seventeen thousand, eight hundred seventy-one".