420023442321 has 24 divisors (see below), whose sum is σ = 734158623744. Its totient is φ = 225894960000.

The previous prime is 420023442313. The next prime is 420023442437. The reversal of 420023442321 is 123244320024.

420023442321 is a `hidden beast` number, since 4 + 2 + 0 + 0 + 234 + 423 + 2 + 1 = 666.

It is not a de Polignac number, because 420023442321 - 2³ = 420023442313 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (420023446321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 196088305 + ... + 196090446.

It is an arithmetic number, because the mean of its divisors is an integer number (30589942656).

Almost surely, 2^420023442321 is an apocalyptic number.

It is an amenable number.

420023442321 is a deficient number, since it is larger than the sum of its proper divisors (314135181423).

420023442321 is a wasteful number, since it uses less digits than its factorization.

420023442321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392178781 (or 392178778 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 420023442321 its reverse (123244320024), we get a palindrome (543267762345).

The spelling of 420023442321 in words is "four hundred twenty billion, twenty-three million, four hundred forty-two thousand, three hundred twenty-one".