427871 has 4 divisors (see below), whose sum is σ = 429552. Its totient is φ = 426192.

The previous prime is 427859. The next prime is 427877. The reversal of 427871 is 178724.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-427871 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 (427877) 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, 371 + ... + 996.

It is an arithmetic number, because the mean of its divisors is an integer number (107388).

2⁴²⁷⁸⁷¹ is an apocalyptic number.

427871 is a deficient number, since it is larger than the sum of its proper divisors (1681).

427871 is a wasteful number, since it uses less digits than its factorization.

427871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680.

The product of its digits is 3136, while the sum is 29.

The square root of 427871 is about 654.1184907951. The cubic root of 427871 is about 75.3536483356.

The spelling of 427871 in words is "four hundred twenty-seven thousand, eight hundred seventy-one".