421300100 has 108 divisors (see below), whose sum is σ = 1004052924. Its totient is φ = 153354240.

The previous prime is 421300097. The next prime is 421300109. The reversal of 421300100 is 1003124.

It is a happy number.

It can be written as a sum of positive squares in 18 ways, for example, as 303317056 + 117983044 = 17416^2 + 10862^2 .

It is not an unprimeable number, because it can be changed into a prime (421300109) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1639172 + ... + 1639428.

Almost surely, 2^421300100 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 421300100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (502026462).

421300100 is an abundant number, since it is smaller than the sum of its proper divisors (582752824).

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

421300100 is a wasteful number, since it uses less digits than its factorization.

421300100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 374 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 421300100 is about 20525.5962154574. The cubic root of 421300100 is about 749.6591636494.

Adding to 421300100 its reverse (1003124), we get a palindrome (422303224).

The spelling of 421300100 in words is "four hundred twenty-one million, three hundred thousand, one hundred".