871420 has 48 divisors (see below), whose sum is σ = 2122848. Its totient is φ = 296960.

The previous prime is 871393. The next prime is 871439. The reversal of 871420 is 24178.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 871391 and 871400.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3624 + ... + 3856.

It is an arithmetic number, because the mean of its divisors is an integer number (44226).

2⁸⁷¹⁴²⁰ 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 871420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1061424).

871420 is an abundant number, since it is smaller than the sum of its proper divisors (1251428).

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

871420 is a wasteful number, since it uses less digits than its factorization.

871420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270 (or 268 counting only the distinct ones).

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

The square root of 871420 is about 933.4987948573. The cubic root of 871420 is about 95.5159371445.

Adding to 871420 its reverse (24178), we get a palindrome (895598).

The spelling of 871420 in words is "eight hundred seventy-one thousand, four hundred twenty".