421009312 has 24 divisors (see below), whose sum is σ = 842453892. Its totient is φ = 207052800.

The previous prime is 421009289. The next prime is 421009321. The reversal of 421009312 is 213900124.

It can be written as a sum of positive squares in 2 ways, for example, as 356303376 + 64705936 = 18876^2 + 8044^2 .

It is an unprimeable number.

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, 105889 + ... + 109792.

Almost surely, 2^421009312 is an apocalyptic number.

It is an amenable number.

421009312 is an abundant number, since it is smaller than the sum of its proper divisors (421444580).

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

421009312 is a wasteful number, since it uses less digits than its factorization.

421009312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215752 (or 215744 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 421009312 is about 20518.5114469837. The cubic root of 421009312 is about 749.4866484107.

Adding to 421009312 its reverse (213900124), we get a palindrome (634909436).

The spelling of 421009312 in words is "four hundred twenty-one million, nine thousand, three hundred twelve".