13442018 has 4 divisors (see below), whose sum is σ = 20163030. Its totient is φ = 6721008.

The previous prime is 13442017. The next prime is 13442057. The reversal of 13442018 is 81024431.

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., 13271449 + 170569 = 3643^2 + 413^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13441984 and 13442002.

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 (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3360503 + ... + 3360506.

Almost surely, 2^13442018 is an apocalyptic number.

13442018 is a deficient number, since it is larger than the sum of its proper divisors (6721012).

13442018 is an equidigital number, since it uses as much as digits as its factorization.

13442018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6721011.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 13442018 is about 3666.3357729482. The cubic root of 13442018 is about 237.7687771524.

Adding to 13442018 its reverse (81024431), we get a palindrome (94466449).

The spelling of 13442018 in words is "thirteen million, four hundred forty-two thousand, eighteen".