421344566 has 8 divisors (see below), whose sum is σ = 645464160. Its totient is φ = 206189848.

The previous prime is 421344563. The next prime is 421344587. The reversal of 421344566 is 665443124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421344563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2241101 + ... + 2241288.

It is an arithmetic number, because the mean of its divisors is an integer number (80683020).

Almost surely, 2^421344566 is an apocalyptic number.

421344566 is a deficient number, since it is larger than the sum of its proper divisors (224119594).

421344566 is a wasteful number, since it uses less digits than its factorization.

421344566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4482438.

The product of its digits is 69120, while the sum is 35.

The square root of 421344566 is about 20526.6793710040. The cubic root of 421344566 is about 749.6855369098.

The spelling of 421344566 in words is "four hundred twenty-one million, three hundred forty-four thousand, five hundred sixty-six".