13420013 has 4 divisors (see below), whose sum is σ = 13479360. Its totient is φ = 13360668.

The previous prime is 13420003. The next prime is 13420019. The reversal of 13420013 is 31002431.

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: 31002431 = 1181 ⋅26251.

It is a cyclic number.

It is not a de Polignac number, because 13420013 - 2⁶ = 13419949 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 13420013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13420019) 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, 29333 + ... + 29786.

It is an arithmetic number, because the mean of its divisors is an integer number (3369840).

Almost surely, 2^13420013 is an apocalyptic number.

It is an amenable number.

13420013 is a deficient number, since it is larger than the sum of its proper divisors (59347).

13420013 is an equidigital number, since it uses as much as digits as its factorization.

13420013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59346.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 13420013 is about 3663.3335911435. Note that the first 3 decimals coincide. The cubic root of 13420013 is about 237.6389613371.

Adding to 13420013 its reverse (31002431), we get a palindrome (44422444).

The spelling of 13420013 in words is "thirteen million, four hundred twenty thousand, thirteen".