13024421 has 4 divisors (see below), whose sum is σ = 13033644. Its totient is φ = 13015200.

The previous prime is 13024409. The next prime is 13024469. The reversal of 13024421 is 12442031.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4351396 + 8673025 = 2086^2 + 2945^2 .

It is a cyclic number.

It is not a de Polignac number, because 13024421 - 2⁶ = 13024357 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 13024421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13024021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2000 + ... + 5481.

It is an arithmetic number, because the mean of its divisors is an integer number (3258411).

Almost surely, 2^13024421 is an apocalyptic number.

It is an amenable number.

13024421 is a deficient number, since it is larger than the sum of its proper divisors (9223).

13024421 is an equidigital number, since it uses as much as digits as its factorization.

13024421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9222.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 13024421 is about 3608.9362698723. The cubic root of 13024421 is about 235.2806124271.

Adding to 13024421 its reverse (12442031), we get a palindrome (25466452).

The spelling of 13024421 in words is "thirteen million, twenty-four thousand, four hundred twenty-one".