13420120423 has 4 divisors (see below), whose sum is σ = 13420506960. Its totient is φ = 13419733888.

The previous prime is 13420120361. The next prime is 13420120447. The reversal of 13420120423 is 32402102431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32402102431 = 141067 ⋅229693.

It is a cyclic number.

It is not a de Polignac number, because 13420120423 - 2¹³ = 13420112231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13420120394 and 13420120403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13420120453) 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, 135418 + ... + 212551.

It is an arithmetic number, because the mean of its divisors is an integer number (3355126740).

Almost surely, 2^13420120423 is an apocalyptic number.

13420120423 is a deficient number, since it is larger than the sum of its proper divisors (386537).

13420120423 is an equidigital number, since it uses as much as digits as its factorization.

13420120423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386536.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 13420120423 its reverse (32402102431), we get a palindrome (45822222854).

The spelling of 13420120423 in words is "thirteen billion, four hundred twenty million, one hundred twenty thousand, four hundred twenty-three".