871423 has 4 divisors (see below), whose sum is σ = 995920. Its totient is φ = 746928.

The previous prime is 871393. The next prime is 871439. The reversal of 871423 is 324178.

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

It is not a de Polignac number, because 871423 - 2⁹ = 870911 is a prime.

It is the 934-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871463) by changing a digit.

It is a nontrivial repunit in base 933.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62238 + ... + 62251.

It is an arithmetic number, because the mean of its divisors is an integer number (248980).

2⁸⁷¹⁴²³ is an apocalyptic number.

871423 is a deficient number, since it is larger than the sum of its proper divisors (124497).

871423 is a wasteful number, since it uses less digits than its factorization.

871423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124496.

The product of its digits is 1344, while the sum is 25.

The square root of 871423 is about 933.5004017139. The cubic root of 871423 is about 95.5160467539.

The spelling of 871423 in words is "eight hundred seventy-one thousand, four hundred twenty-three".