11865043 has 4 divisors (see below), whose sum is σ = 11893648. Its totient is φ = 11836440.

The previous prime is 11865037. The next prime is 11865047. The reversal of 11865043 is 34056811.

11865043 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 a de Polignac number, because none of the positive numbers 2^k-11865043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11865047) 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, 13671 + ... + 14512.

It is an arithmetic number, because the mean of its divisors is an integer number (2973412).

Almost surely, 2^11865043 is an apocalyptic number.

11865043 is a deficient number, since it is larger than the sum of its proper divisors (28605).

11865043 is an equidigital number, since it uses as much as digits as its factorization.

11865043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28604.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 11865043 is about 3444.5671716487. The cubic root of 11865043 is about 228.0813485754.

The spelling of 11865043 in words is "eleven million, eight hundred sixty-five thousand, forty-three".