13356842 has 4 divisors (see below), whose sum is σ = 20035266. Its totient is φ = 6678420.

The previous prime is 13356839. The next prime is 13356869. The reversal of 13356842 is 24865331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24865331 = 673 ⋅36947.

It can be written as a sum of positive squares in only one way, i.e., 11771761 + 1585081 = 3431^2 + 1259^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13356799 and 13356808.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3339209 + ... + 3339212.

Almost surely, 2^13356842 is an apocalyptic number.

13356842 is a deficient number, since it is larger than the sum of its proper divisors (6678424).

13356842 is an equidigital number, since it uses as much as digits as its factorization.

13356842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6678423.

The product of its digits is 17280, while the sum is 32.

The square root of 13356842 is about 3654.7013557882. The cubic root of 13356842 is about 237.2655015053.

The spelling of 13356842 in words is "thirteen million, three hundred fifty-six thousand, eight hundred forty-two".