13281842 has 24 divisors (see below), whose sum is σ = 23303196. Its totient is φ = 5660928.

The previous prime is 13281823. The next prime is 13281889. The reversal of 13281842 is 24818231.

It can be written as a sum of positive squares in 2 ways, for example, as 9357481 + 3924361 = 3059^2 + 1981^2 .

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30458 + ... + 30890.

Almost surely, 2^13281842 is an apocalyptic number.

13281842 is a deficient number, since it is larger than the sum of its proper divisors (10021354).

13281842 is a wasteful number, since it uses less digits than its factorization.

13281842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762 (or 755 counting only the distinct ones).

The product of its digits is 3072, while the sum is 29.

The square root of 13281842 is about 3644.4261551032. The cubic root of 13281842 is about 236.8205778814.

The spelling of 13281842 in words is "thirteen million, two hundred eighty-one thousand, eight hundred forty-two".