13421024209 has 4 divisors (see below), whose sum is σ = 13517578480. Its totient is φ = 13324469940.

The previous prime is 13421024191. The next prime is 13421024237. The reversal of 13421024209 is 90242012431.

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 not a de Polignac number, because 13421024209 - 2¹⁹ = 13420499921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13421024299) 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, 48276927 + ... + 48277204.

It is an arithmetic number, because the mean of its divisors is an integer number (3379394620).

Almost surely, 2^13421024209 is an apocalyptic number.

It is an amenable number.

13421024209 is a deficient number, since it is larger than the sum of its proper divisors (96554271).

13421024209 is an equidigital number, since it uses as much as digits as its factorization.

13421024209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96554270.

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 13421024209 in words is "thirteen billion, four hundred twenty-one million, twenty-four thousand, two hundred nine".