421230444 has 12 divisors (see below), whose sum is σ = 982871064. Its totient is φ = 140410144.

The previous prime is 421230443. The next prime is 421230457. The reversal of 421230444 is 444032124.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (421230443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17551257 + ... + 17551280.

It is an arithmetic number, because the mean of its divisors is an integer number (81905922).

Almost surely, 2^421230444 is an apocalyptic number.

It is an amenable number.

421230444 is an abundant number, since it is smaller than the sum of its proper divisors (561640620).

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

421230444 is a wasteful number, since it uses less digits than its factorization.

421230444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35102544 (or 35102542 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 421230444 is about 20523.8993371143. The cubic root of 421230444 is about 749.6178461999.

Adding to 421230444 its reverse (444032124), we get a palindrome (865262568).

The spelling of 421230444 in words is "four hundred twenty-one million, two hundred thirty thousand, four hundred forty-four".