13442047 has 4 divisors (see below), whose sum is σ = 13728096. Its totient is φ = 13156000.

The previous prime is 13442017. The next prime is 13442057. The reversal of 13442047 is 74024431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74024431 = 13 ⋅5694187.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13442047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13442017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142954 + ... + 143047.

It is an arithmetic number, because the mean of its divisors is an integer number (3432024).

Almost surely, 2^13442047 is an apocalyptic number.

13442047 is a deficient number, since it is larger than the sum of its proper divisors (286049).

13442047 is an equidigital number, since it uses as much as digits as its factorization.

13442047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286048.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 13442047 is about 3666.3397278485. The cubic root of 13442047 is about 237.7689481409.

Adding to 13442047 its reverse (74024431), we get a palindrome (87466478).

The spelling of 13442047 in words is "thirteen million, four hundred forty-two thousand, forty-seven".