421431344 has 20 divisors (see below), whose sum is σ = 817440240. Its totient is φ = 210479040.

The previous prime is 421431337. The next prime is 421431383. The reversal of 421431344 is 443134124.

It is an unprimeable 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 3 ways as a sum of consecutive naturals, for example, 374 + ... + 29034.

It is an arithmetic number, because the mean of its divisors is an integer number (40872012).

Almost surely, 2^421431344 is an apocalyptic number.

It is an amenable number.

421431344 is a deficient number, since it is larger than the sum of its proper divisors (396008896).

421431344 is a wasteful number, since it uses less digits than its factorization.

421431344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29588 (or 29582 counting only the distinct ones).

The product of its digits is 4608, while the sum is 26.

The square root of 421431344 is about 20528.7930478146. The cubic root of 421431344 is about 749.7370005266.

Adding to 421431344 its reverse (443134124), we get a palindrome (864565468).

The spelling of 421431344 in words is "four hundred twenty-one million, four hundred thirty-one thousand, three hundred forty-four".