42871271 has 4 divisors (see below), whose sum is σ = 44029992. Its totient is φ = 41712552.

The previous prime is 42871261. The next prime is 42871289. The reversal of 42871271 is 17217824.

It is a happy number.

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 42871271 - 2¹⁴ = 42854887 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 (42871261) 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, 579305 + ... + 579378.

It is an arithmetic number, because the mean of its divisors is an integer number (11007498).

Almost surely, 2^42871271 is an apocalyptic number.

42871271 is a deficient number, since it is larger than the sum of its proper divisors (1158721).

42871271 is a wasteful number, since it uses less digits than its factorization.

42871271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158720.

The product of its digits is 6272, while the sum is 32.

The square root of 42871271 is about 6547.6156728996. The cubic root of 42871271 is about 349.9898527670.

The spelling of 42871271 in words is "forty-two million, eight hundred seventy-one thousand, two hundred seventy-one".