422621443421 has 8 divisors (see below), whose sum is σ = 425683923840. Its totient is φ = 419559278112.

The previous prime is 422621443411. The next prime is 422621443481. The reversal of 422621443421 is 124344126224.

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 422621443421 - 2⁶ = 422621443357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422621443411) 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, 3066041 + ... + 3200913.

It is an arithmetic number, because the mean of its divisors is an integer number (53210490480).

Almost surely, 2^422621443421 is an apocalyptic number.

It is an amenable number.

422621443421 is a deficient number, since it is larger than the sum of its proper divisors (3062480419).

422621443421 is a wasteful number, since it uses less digits than its factorization.

422621443421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157555.

The product of its digits is 73728, while the sum is 35.

Adding to 422621443421 its reverse (124344126224), we get a palindrome (546965569645).

The spelling of 422621443421 in words is "four hundred twenty-two billion, six hundred twenty-one million, four hundred forty-three thousand, four hundred twenty-one".