13423341421 has 4 divisors (see below), whose sum is σ = 15340961632. Its totient is φ = 11505721212.

The previous prime is 13423341419. The next prime is 13423341427. The reversal of 13423341421 is 12414332431.

It is a happy number.

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: 12414332431 = 173 ⋅71759147.

It is a cyclic number.

It is not a de Polignac number, because 13423341421 - 2¹ = 13423341419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13423341421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13423341427) 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 3 ways as a sum of consecutive naturals, for example, 958810095 + ... + 958810108.

It is an arithmetic number, because the mean of its divisors is an integer number (3835240408).

Almost surely, 2^13423341421 is an apocalyptic number.

It is an amenable number.

13423341421 is a deficient number, since it is larger than the sum of its proper divisors (1917620211).

13423341421 is an equidigital number, since it uses as much as digits as its factorization.

13423341421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1917620210.

The product of its digits is 6912, while the sum is 28.

Adding to 13423341421 its reverse (12414332431), we get a palindrome (25837673852).

The spelling of 13423341421 in words is "thirteen billion, four hundred twenty-three million, three hundred forty-one thousand, four hundred twenty-one".