13041905 has 4 divisors (see below), whose sum is σ = 15650292. Its totient is φ = 10433520.

The previous prime is 13041901. The next prime is 13041911. The reversal of 13041905 is 50914031.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7491169 + 5550736 = 2737^2 + 2356^2 .

It is not a de Polignac number, because 13041905 - 2² = 13041901 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13041901) 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, 1304186 + ... + 1304195.

It is an arithmetic number, because the mean of its divisors is an integer number (3912573).

Almost surely, 2^13041905 is an apocalyptic number.

It is an amenable number.

13041905 is a deficient number, since it is larger than the sum of its proper divisors (2608387).

13041905 is an equidigital number, since it uses as much as digits as its factorization.

13041905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2608386.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 13041905 is about 3611.3577779002. The cubic root of 13041905 is about 235.3858456879.

Adding to 13041905 its reverse (50914031), we get a palindrome (63955936).

The spelling of 13041905 in words is "thirteen million, forty-one thousand, nine hundred five".