13423000421 has 4 divisors (see below), whose sum is σ = 13483193472. Its totient is φ = 13362807372.

The previous prime is 13423000417. The next prime is 13423000429. The reversal of 13423000421 is 12400032431.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12400032431 = 80909 ⋅153259.

It is a cyclic number.

It is not a de Polignac number, because 13423000421 - 2² = 13423000417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13423000393 and 13423000402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13423000429) 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, 30096191 + ... + 30096636.

It is an arithmetic number, because the mean of its divisors is an integer number (3370798368).

Almost surely, 2^13423000421 is an apocalyptic number.

It is an amenable number.

13423000421 is a deficient number, since it is larger than the sum of its proper divisors (60193051).

13423000421 is an equidigital number, since it uses as much as digits as its factorization.

13423000421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60193050.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 13423000421 its reverse (12400032431), we get a palindrome (25823032852).

The spelling of 13423000421 in words is "thirteen billion, four hundred twenty-three million, four hundred twenty-one", and thus it is an aban number.