423243221401 has 16 divisors (see below), whose sum is σ = 568270620288. Its totient is φ = 304430688000.

The previous prime is 423243221383. The next prime is 423243221407. The reversal of 423243221401 is 104122342324.

It is a cyclic number.

It is not a de Polignac number, because 423243221401 - 2⁵ = 423243221369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 423243221401.

It is not an unprimeable number, because it can be changed into a prime (423243221407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211409200 + ... + 211411201.

It is an arithmetic number, because the mean of its divisors is an integer number (35516913768).

Almost surely, 2^423243221401 is an apocalyptic number.

It is an amenable number.

423243221401 is a deficient number, since it is larger than the sum of its proper divisors (145027398887).

423243221401 is a wasteful number, since it uses less digits than its factorization.

423243221401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422820432.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 423243221401 its reverse (104122342324), we get a palindrome (527365563725).

The spelling of 423243221401 in words is "four hundred twenty-three billion, two hundred forty-three million, two hundred twenty-one thousand, four hundred one".