13321442 has 4 divisors (see below), whose sum is σ = 19982166. Its totient is φ = 6660720.

The previous prime is 13321403. The next prime is 13321447. The reversal of 13321442 is 24412331.

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., 13315201 + 6241 = 3649^2 + 79^2 .

It is not an unprimeable number, because it can be changed into a prime (13321447) 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, 3330359 + ... + 3330362.

Almost surely, 2^13321442 is an apocalyptic number.

13321442 is a deficient number, since it is larger than the sum of its proper divisors (6660724).

13321442 is an equidigital number, since it uses as much as digits as its factorization.

13321442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6660723.

The product of its digits is 576, while the sum is 20.

The square root of 13321442 is about 3649.8550656156. The cubic root of 13321442 is about 237.0557056592.

Adding to 13321442 its reverse (24412331), we get a palindrome (37733773).

The spelling of 13321442 in words is "thirteen million, three hundred twenty-one thousand, four hundred forty-two".