871242 has 8 divisors (see below), whose sum is σ = 1742496. Its totient is φ = 290412.

The previous prime is 871231. The next prime is 871249. The reversal of 871242 is 242178.

871242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

871242 is an admirable number.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (871249) by changing a digit.

871242 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, 72598 + ... + 72609.

It is an arithmetic number, because the mean of its divisors is an integer number (217812).

2⁸⁷¹²⁴² is an apocalyptic number.

871242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

871242 is a wasteful number, since it uses less digits than its factorization.

871242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145212.

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

The square root of 871242 is about 933.4034497472. The cubic root of 871242 is about 95.5094332028.

The spelling of 871242 in words is "eight hundred seventy-one thousand, two hundred forty-two".