13706842 has 4 divisors (see below), whose sum is σ = 20560266. Its totient is φ = 6853420.

The previous prime is 13706839. The next prime is 13706843. The reversal of 13706842 is 24860731.

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

It can be written as a sum of positive squares in only one way, i.e., 7845601 + 5861241 = 2801^2 + 2421^2 .

It is a super-2 number, since 2×13706842² = 375755035225928, which contains 22 as substring.

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 not an unprimeable number, because it can be changed into a prime (13706843) by changing a digit.

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 as a sum of consecutive naturals, namely, 3426709 + ... + 3426712.

Almost surely, 2^13706842 is an apocalyptic number.

13706842 is a deficient number, since it is larger than the sum of its proper divisors (6853424).

13706842 is an equidigital number, since it uses as much as digits as its factorization.

13706842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6853423.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 13706842 is about 3702.2752463857. The cubic root of 13706842 is about 239.3200779086.

The spelling of 13706842 in words is "thirteen million, seven hundred six thousand, eight hundred forty-two".