421245320 has 32 divisors (see below), whose sum is σ = 948499200. Its totient is φ = 168374208.

The previous prime is 421245311. The next prime is 421245323. The reversal of 421245320 is 23542124.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (421245323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67367 + ... + 73353.

It is an arithmetic number, because the mean of its divisors is an integer number (29640600).

Almost surely, 2^421245320 is an apocalyptic number.

421245320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421245320 is an abundant number, since it is smaller than the sum of its proper divisors (527253880).

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

421245320 is a wasteful number, since it uses less digits than its factorization.

421245320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7757 (or 7753 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 421245320 is about 20524.2617406814. The cubic root of 421245320 is about 749.6266704939.

Adding to 421245320 its reverse (23542124), we get a palindrome (444787444).

The spelling of 421245320 in words is "four hundred twenty-one million, two hundred forty-five thousand, three hundred twenty".