421464321 has 24 divisors (see below), whose sum is σ = 626731560. Its totient is φ = 272802816.

The previous prime is 421464301. The next prime is 421464343. The reversal of 421464321 is 123464124.

It is a happy number.

421464321 is a `hidden beast` number, since 4 + 2 + 14 + 643 + 2 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 27878400 + 393585921 = 5280^2 + 19839^2 .

It is not a de Polignac number, because 421464321 - 2⁷ = 421464193 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (421464301) 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 23 ways as a sum of consecutive naturals, for example, 41715 + ... + 50823.

It is an arithmetic number, because the mean of its divisors is an integer number (26113815).

Almost surely, 2^421464321 is an apocalyptic number.

It is an amenable number.

421464321 is a deficient number, since it is larger than the sum of its proper divisors (205267239).

421464321 is a wasteful number, since it uses less digits than its factorization.

421464321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9265 (or 9262 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 421464321 is about 20529.5962210658. The cubic root of 421464321 is about 749.7565556550.

The spelling of 421464321 in words is "four hundred twenty-one million, four hundred sixty-four thousand, three hundred twenty-one".