423013111421 has 4 divisors (see below), whose sum is σ = 423029046144. Its totient is φ = 422997176700.

The previous prime is 423013111399. The next prime is 423013111447. The reversal of 423013111421 is 124111310324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423013111421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423013111481) 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, 7927475 + ... + 7980656.

It is an arithmetic number, because the mean of its divisors is an integer number (105757261536).

Almost surely, 2^423013111421 is an apocalyptic number.

It is an amenable number.

423013111421 is a deficient number, since it is larger than the sum of its proper divisors (15934723).

423013111421 is a wasteful number, since it uses less digits than its factorization.

423013111421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15934722.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 423013111421 its reverse (124111310324), we get a palindrome (547124421745).

The spelling of 423013111421 in words is "four hundred twenty-three billion, thirteen million, one hundred eleven thousand, four hundred twenty-one".