421303344 has 80 divisors (see below), whose sum is σ = 1356936960. Its totient is φ = 109428480.

The previous prime is 421303343. The next prime is 421303357. The reversal of 421303344 is 443303124.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (421303343) 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 15 ways as a sum of consecutive naturals, for example, 53299 + ... + 60690.

It is an arithmetic number, because the mean of its divisors is an integer number (16961712).

Almost surely, 2^421303344 is an apocalyptic number.

421303344 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

421303344 is an abundant number, since it is smaller than the sum of its proper divisors (935633616).

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

421303344 is a wasteful number, since it uses less digits than its factorization.

421303344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114018 (or 114012 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 421303344 is about 20525.6752385884. The cubic root of 421303344 is about 749.6610877633.

Adding to 421303344 its reverse (443303124), we get a palindrome (864606468).

The spelling of 421303344 in words is "four hundred twenty-one million, three hundred three thousand, three hundred forty-four".