1321110242 has 32 divisors (see below), whose sum is σ = 2141061120. Its totient is φ = 609351120.

The previous prime is 1321110191. The next prime is 1321110257. The reversal of 1321110242 is 2420111231.

It is a self number, because there is not a number n which added to its sum of digits gives 1321110242.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 624767 + ... + 626877.

It is an arithmetic number, because the mean of its divisors is an integer number (66908160).

Almost surely, 2^1321110242 is an apocalyptic number.

1321110242 is a deficient number, since it is larger than the sum of its proper divisors (819950878).

1321110242 is a wasteful number, since it uses less digits than its factorization.

1321110242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2558.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1321110242 is about 36347.0802403714. The cubic root of 1321110242 is about 1097.2687729172.

Adding to 1321110242 its reverse (2420111231), we get a palindrome (3741221473).

The spelling of 1321110242 in words is "one billion, three hundred twenty-one million, one hundred ten thousand, two hundred forty-two".