871042 has 8 divisors (see below), whose sum is σ = 1310796. Its totient is φ = 434112.

The previous prime is 871037. The next prime is 871061. The reversal of 871042 is 240178.

It can be written as a sum of positive squares in 2 ways, for example, as 848241 + 22801 = 921^2 + 151^2 .

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

It is an Ulam number.

It is an unprimeable number.

871042 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 438 + ... + 1390.

2⁸⁷¹⁰⁴² is an apocalyptic number.

871042 is a deficient number, since it is larger than the sum of its proper divisors (439754).

871042 is a wasteful number, since it uses less digits than its factorization.

871042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 871042 is about 933.2963087894. The cubic root of 871042 is about 95.5021243463.

The spelling of 871042 in words is "eight hundred seventy-one thousand, forty-two".