421333320 has 64 divisors (see below), whose sum is σ = 1318965120. Its totient is φ = 107469824.

The previous prime is 421333309. The next prime is 421333327. The reversal of 421333320 is 23333124.

It is not an unprimeable number, because it can be changed into a prime (421333327) 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, 73569 + ... + 79088.

It is an arithmetic number, because the mean of its divisors is an integer number (20608830).

Almost surely, 2^421333320 is an apocalyptic number.

421333320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421333320 is an abundant number, since it is smaller than the sum of its proper divisors (897631800).

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

421333320 is a wasteful number, since it uses less digits than its factorization.

421333320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152694 (or 152690 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 421333320 is about 20526.4054330026. The cubic root of 421333320 is about 749.6788669622.

Adding to 421333320 its reverse (23333124), we get a palindrome (444666444).

The spelling of 421333320 in words is "four hundred twenty-one million, three hundred thirty-three thousand, three hundred twenty".