421205300 has 72 divisors (see below), whose sum is σ = 985770240. Its totient is φ = 155692800.

The previous prime is 421205293. The next prime is 421205303. The reversal of 421205300 is 3502124.

421205300 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421205303) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 75197 + ... + 80603.

Almost surely, 2^421205300 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 421205300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (492885120).

421205300 is an abundant number, since it is smaller than the sum of its proper divisors (564564940).

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

421205300 is a wasteful number, since it uses less digits than its factorization.

421205300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5481 (or 5474 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 421205300 is about 20523.2867738089. The cubic root of 421205300 is about 749.6029305590.

Adding to 421205300 its reverse (3502124), we get a palindrome (424707424).

The spelling of 421205300 in words is "four hundred twenty-one million, two hundred five thousand, three hundred".