421300 has 36 divisors (see below), whose sum is σ = 999936. Its totient is φ = 152800.

The previous prime is 421279. The next prime is 421303. The reversal of 421300 is 3124.

421300 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421303) by changing a digit.

421300 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 909 + ... + 1291.

It is an arithmetic number, because the mean of its divisors is an integer number (27776).

2⁴²¹³⁰⁰ 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 421300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (499968).

421300 is an abundant number, since it is smaller than the sum of its proper divisors (578636).

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

421300 is a wasteful number, since it uses less digits than its factorization.

421300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408 (or 401 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 421300 is about 649.0762667052. The cubic root of 421300 is about 74.9659104336.

Adding to 421300 its reverse (3124), we get a palindrome (424424).

The spelling of 421300 in words is "four hundred twenty-one thousand, three hundred", and thus it is an iban number.