13605043 has 4 divisors (see below), whose sum is σ = 13894560. Its totient is φ = 13315528.

The previous prime is 13605019. The next prime is 13605077. The reversal of 13605043 is 34050631.

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 13605043 - 2⁹ = 13604531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13605343) 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, 144688 + ... + 144781.

It is an arithmetic number, because the mean of its divisors is an integer number (3473640).

Almost surely, 2^13605043 is an apocalyptic number.

13605043 is a deficient number, since it is larger than the sum of its proper divisors (289517).

13605043 is an equidigital number, since it uses as much as digits as its factorization.

13605043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289516.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 13605043 is about 3688.5014572316. The cubic root of 13605043 is about 238.7261383460.

Adding to 13605043 its reverse (34050631), we get a palindrome (47655674).

The spelling of 13605043 in words is "thirteen million, six hundred five thousand, forty-three".