13142081 has 4 divisors (see below), whose sum is σ = 13199700. Its totient is φ = 13084464.

The previous prime is 13142069. The next prime is 13142083. The reversal of 13142081 is 18024131.

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 10995856 + 2146225 = 3316^2 + 1465^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13142081 is a prime.

It is a super-2 number, since 2×13142081² = 345428586021122, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (13142083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28466 + ... + 28923.

It is an arithmetic number, because the mean of its divisors is an integer number (3299925).

Almost surely, 2^13142081 is an apocalyptic number.

It is an amenable number.

13142081 is a deficient number, since it is larger than the sum of its proper divisors (57619).

13142081 is an equidigital number, since it uses as much as digits as its factorization.

13142081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57618.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 13142081 is about 3625.2008220235. The cubic root of 13142081 is about 235.9869821892.

The spelling of 13142081 in words is "thirteen million, one hundred forty-two thousand, eighty-one".