421880 has 32 divisors (see below), whose sum is σ = 972000. Its totient is φ = 164736.

The previous prime is 421847. The next prime is 421891. The reversal of 421880 is 88124.

421880 is nontrivially palindromic in base 3.

421880 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 2021 + ... + 2219.

It is an arithmetic number, because the mean of its divisors is an integer number (30375).

2⁴²¹⁸⁸⁰ is an apocalyptic number.

421880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (486000).

421880 is an abundant number, since it is smaller than the sum of its proper divisors (550120).

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

421880 is a wasteful number, since it uses less digits than its factorization.

421880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 421880 is about 649.5229018287. The cubic root of 421880 is about 75.0002962951. Note that the first 3 decimals are identical.

The spelling of 421880 in words is "four hundred twenty-one thousand, eight hundred eighty".