12520843 has 4 divisors (see below), whose sum is σ = 12556080. Its totient is φ = 12485608.

The previous prime is 12520831. The next prime is 12520853. The reversal of 12520843 is 34802521.

12520843 is digitally balanced in base 3, 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.

It is a cyclic number.

It is not a de Polignac number, because 12520843 - 2⁵ = 12520811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12520853) 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, 17080 + ... + 17797.

It is an arithmetic number, because the mean of its divisors is an integer number (3139020).

Almost surely, 2^12520843 is an apocalyptic number.

12520843 is a deficient number, since it is larger than the sum of its proper divisors (35237).

12520843 is an equidigital number, since it uses as much as digits as its factorization.

12520843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35236.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 12520843 is about 3538.4803235287. The cubic root of 12520843 is about 232.2083628991.

The spelling of 12520843 in words is "twelve million, five hundred twenty thousand, eight hundred forty-three".