871421400 has 72 divisors (see below), whose sum is σ = 2926529580. Its totient is φ = 232378560.

The previous prime is 871421393. The next prime is 871421413. The reversal of 871421400 is 4124178.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 240262 + ... + 243861.

Almost surely, 2^871421400 is an apocalyptic number.

It is an amenable number.

871421400 is an abundant number, since it is smaller than the sum of its proper divisors (2055108180).

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

871421400 is a wasteful number, since it uses less digits than its factorization.

871421400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484145 (or 484133 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 871421400 is about 29519.8475605820. The cubic root of 871421400 is about 955.1598829561.

Adding to 871421400 its reverse (4124178), we get a palindrome (875545578).

The spelling of 871421400 in words is "eight hundred seventy-one million, four hundred twenty-one thousand, four hundred".