420003344 has 20 divisors (see below), whose sum is σ = 833605500. Its totient is φ = 204879360.

The previous prime is 420003293. The next prime is 420003347. The reversal of 420003344 is 443300024.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 55651600 + 364351744 = 7460^2 + 19088^2 .

It is not an unprimeable number, because it can be changed into a prime (420003347) by changing a digit.

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, 319469 + ... + 320780.

It is an arithmetic number, because the mean of its divisors is an integer number (41680275).

Almost surely, 2^420003344 is an apocalyptic number.

It is an amenable number.

420003344 is a deficient number, since it is larger than the sum of its proper divisors (413602156).

420003344 is a wasteful number, since it uses less digits than its factorization.

420003344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640298 (or 640292 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 420003344 is about 20493.9831170029. The cubic root of 420003344 is about 748.8892262395.

Adding to 420003344 its reverse (443300024), we get a palindrome (863303368).

The spelling of 420003344 in words is "four hundred twenty million, three thousand, three hundred forty-four".