13120747 has 4 divisors (see below), whose sum is σ = 13131000. Its totient is φ = 13110496.

The previous prime is 13120739. The next prime is 13120759. The reversal of 13120747 is 74702131.

It is a happy number.

13120747 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 is a cyclic number.

It is not a de Polignac number, because 13120747 - 2³ = 13120739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13120717) 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, 2878 + ... + 5875.

It is an arithmetic number, because the mean of its divisors is an integer number (3282750).

Almost surely, 2^13120747 is an apocalyptic number.

13120747 is a deficient number, since it is larger than the sum of its proper divisors (10253).

13120747 is an equidigital number, since it uses as much as digits as its factorization.

13120747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10252.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 13120747 is about 3622.2571692247. The cubic root of 13120747 is about 235.8592177205.

Adding to 13120747 its reverse (74702131), we get a palindrome (87822878).

The spelling of 13120747 in words is "thirteen million, one hundred twenty thousand, seven hundred forty-seven".