13042849 has 4 divisors (see below), whose sum is σ = 13050180. Its totient is φ = 13035520.

The previous prime is 13042819. The next prime is 13042853. The reversal of 13042849 is 94824031.

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 can be written as a sum of positive squares in 2 ways, for example, as 12552849 + 490000 = 3543^2 + 700^2 .

It is a cyclic number.

It is not a de Polignac number, because 13042849 - 2¹⁷ = 12911777 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13042849.

It is not an unprimeable number, because it can be changed into a prime (13042819) 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, 897 + ... + 5185.

It is an arithmetic number, because the mean of its divisors is an integer number (3262545).

It is a vampire number, since it can be written as 3041 ⋅ 4289 (with its own digits).

Almost surely, 2^13042849 is an apocalyptic number.

It is an amenable number.

13042849 is a deficient number, since it is larger than the sum of its proper divisors (7331).

13042849 is an equidigital number, since it uses as much as digits as its factorization.

13042849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7330.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 13042849 is about 3611.4884742998. The cubic root of 13042849 is about 235.3915247887.

The spelling of 13042849 in words is "thirteen million, forty-two thousand, eight hundred forty-nine".