421424323 has 8 divisors (see below), whose sum is σ = 435778560. Its totient is φ = 407117640.

The previous prime is 421424321. The next prime is 421424327. The reversal of 421424323 is 323424124.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 421424323 - 2¹ = 421424321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421424321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6618 + ... + 29776.

It is an arithmetic number, because the mean of its divisors is an integer number (54472320).

Almost surely, 2^421424323 is an apocalyptic number.

421424323 is a deficient number, since it is larger than the sum of its proper divisors (14354237).

421424323 is a wasteful number, since it uses less digits than its factorization.

421424323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23777.

The product of its digits is 4608, while the sum is 25.

The square root of 421424323 is about 20528.6220433813. The cubic root of 421424323 is about 749.7328369914.

Adding to 421424323 its reverse (323424124), we get a palindrome (744848447).

The spelling of 421424323 in words is "four hundred twenty-one million, four hundred twenty-four thousand, three hundred twenty-three".