871240 has 32 divisors (see below), whose sum is σ = 2047680. Its totient is φ = 332992.

The previous prime is 871231. The next prime is 871249. The reversal of 871240 is 42178.

It is an interprime number because it is at equal distance from previous prime (871231) and next prime (871249).

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

871240 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 7 ways as a sum of consecutive naturals, for example, 447 + ... + 1393.

It is an arithmetic number, because the mean of its divisors is an integer number (63990).

2⁸⁷¹²⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 871240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1023840).

871240 is an abundant number, since it is smaller than the sum of its proper divisors (1176440).

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

871240 is a wasteful number, since it uses less digits than its factorization.

871240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981 (or 977 counting only the distinct ones).

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

The square root of 871240 is about 933.4023783985. The cubic root of 871240 is about 95.5093601198.

It can be divided in two parts, 871 and 240, that added together give a palindrome (1111).

The spelling of 871240 in words is "eight hundred seventy-one thousand, two hundred forty".