422871 has 8 divisors (see below), whose sum is σ = 582144. Its totient is φ = 272760.

The previous prime is 422869. The next prime is 422879. The reversal of 422871 is 178224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 422871 - 2¹ = 422869 is a prime.

It is an Ulam number.

422871 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422879) 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 7 ways as a sum of consecutive naturals, for example, 2181 + ... + 2366.

It is an arithmetic number, because the mean of its divisors is an integer number (72768).

2⁴²²⁸⁷¹ is an apocalyptic number.

422871 is a deficient number, since it is larger than the sum of its proper divisors (159273).

422871 is a wasteful number, since it uses less digits than its factorization.

422871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4581.

The product of its digits is 896, while the sum is 24.

The square root of 422871 is about 650.2853219934. The cubic root of 422871 is about 75.0589758347.

The spelling of 422871 in words is "four hundred twenty-two thousand, eight hundred seventy-one".