421876 has 48 divisors (see below), whose sum is σ = 972160. Its totient is φ = 155520.

The previous prime is 421847. The next prime is 421891. The reversal of 421876 is 678124.

It is a Cunningham number, because it is equal to 75³+1.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an Ulam number.

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, 6886 + ... + 6946.

2⁴²¹⁸⁷⁶ 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 421876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (486080).

421876 is an abundant number, since it is smaller than the sum of its proper divisors (550284).

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

421876 is a wasteful number, since it uses less digits than its factorization.

421876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104 (or 102 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 421876 is about 649.5198226382. The cubic root of 421876 is about 75.0000592592. Note that the first 4 decimals are identical.

The spelling of 421876 in words is "four hundred twenty-one thousand, eight hundred seventy-six".