1321444342 has 8 divisors (see below), whose sum is σ = 2014661232. Its totient is φ = 649890600.

The previous prime is 1321444303. The next prime is 1321444343. The reversal of 1321444342 is 2434441231.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1321444342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321444343) 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, 5415634 + ... + 5415877.

It is an arithmetic number, because the mean of its divisors is an integer number (251832654).

Almost surely, 2^1321444342 is an apocalyptic number.

1321444342 is a deficient number, since it is larger than the sum of its proper divisors (693216890).

1321444342 is a wasteful number, since it uses less digits than its factorization.

1321444342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10831574.

The product of its digits is 9216, while the sum is 28.

The square root of 1321444342 is about 36351.6759173494. The cubic root of 1321444342 is about 1097.3612624477.

Adding to 1321444342 its reverse (2434441231), we get a palindrome (3755885573).

The spelling of 1321444342 in words is "one billion, three hundred twenty-one million, four hundred forty-four thousand, three hundred forty-two".