421340332 has 24 divisors (see below), whose sum is σ = 847736064. Its totient is φ = 179491152.

The previous prime is 421340327. The next prime is 421340351. The reversal of 421340332 is 233043124.

It is a happy number.

It is an unprimeable number.

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, 40378 + ... + 49729.

It is an arithmetic number, because the mean of its divisors is an integer number (35322336).

Almost surely, 2^421340332 is an apocalyptic number.

It is an amenable number.

421340332 is an abundant number, since it is smaller than the sum of its proper divisors (426395732).

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

421340332 is a wasteful number, since it uses less digits than its factorization.

421340332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90285 (or 90283 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 421340332 is about 20526.5762366742. The cubic root of 421340332 is about 749.6830257590.

Adding to 421340332 its reverse (233043124), we get a palindrome (654383456).

The spelling of 421340332 in words is "four hundred twenty-one million, three hundred forty thousand, three hundred thirty-two".