13142005 has 4 divisors (see below), whose sum is σ = 15770412. Its totient is φ = 10513600.

The previous prime is 13141991. The next prime is 13142009. The reversal of 13142005 is 50024131.

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 4297329 + 8844676 = 2073^2 + 2974^2 .

It is not a de Polignac number, because 13142005 - 2¹⁵ = 13109237 is a prime.

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 13142005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13142009) 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, 1314196 + ... + 1314205.

It is an arithmetic number, because the mean of its divisors is an integer number (3942603).

Almost surely, 2^13142005 is an apocalyptic number.

It is an amenable number.

13142005 is a deficient number, since it is larger than the sum of its proper divisors (2628407).

13142005 is an equidigital number, since it uses as much as digits as its factorization.

13142005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2628406.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 13142005 is about 3625.1903398304. The cubic root of 13142005 is about 235.9865272880.

Adding to 13142005 its reverse (50024131), we get a palindrome (63166136).

The spelling of 13142005 in words is "thirteen million, one hundred forty-two thousand, five".