13120243 has 16 divisors (see below), whose sum is σ = 14376960. Its totient is φ = 11926656.

The previous prime is 13120231. The next prime is 13120253. The reversal of 13120243 is 34202131.

It is a happy number.

13120243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13120243 - 2⁹ = 13119731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13120213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103246 + ... + 103372.

It is an arithmetic number, because the mean of its divisors is an integer number (898560).

Almost surely, 2^13120243 is an apocalyptic number.

13120243 is a deficient number, since it is larger than the sum of its proper divisors (1256717).

13120243 is a wasteful number, since it uses less digits than its factorization.

13120243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 13120243 is about 3622.1875986757. The cubic root of 13120243 is about 235.8561977052.

Adding to 13120243 its reverse (34202131), we get a palindrome (47322374).

The spelling of 13120243 in words is "thirteen million, one hundred twenty thousand, two hundred forty-three".