13656842 has 8 divisors (see below), whose sum is σ = 20518596. Its totient is φ = 6817312.

The previous prime is 13656827. The next prime is 13656847. The reversal of 13656842 is 24865631.

It can be written as a sum of positive squares in 2 ways, for example, as 13535041 + 121801 = 3679^2 + 349^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (13656847) 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, 3923 + ... + 6534.

Almost surely, 2^13656842 is an apocalyptic number.

13656842 is a deficient number, since it is larger than the sum of its proper divisors (6861754).

13656842 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (13656841) it forms an eRAP, since the sums of their prime factors are consecutive (11111 and 11112).

13656842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11112.

The product of its digits is 34560, while the sum is 35.

The square root of 13656842 is about 3695.5164727004. The cubic root of 13656842 is about 239.0287250361.

The spelling of 13656842 in words is "thirteen million, six hundred fifty-six thousand, eight hundred forty-two".