1321120042 has 8 divisors (see below), whose sum is σ = 2161832832. Its totient is φ = 600509100.

The previous prime is 1321120013. The next prime is 1321120043. The reversal of 1321120042 is 2400211231.

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

It is a junction number, because it is equal to n+sod(n) for n = 1321119998 and 1321120025.

It is not an unprimeable number, because it can be changed into a prime (1321120043) 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, 30025434 + ... + 30025477.

It is an arithmetic number, because the mean of its divisors is an integer number (270229104).

Almost surely, 2^1321120042 is an apocalyptic number.

1321120042 is a deficient number, since it is larger than the sum of its proper divisors (840712790).

1321120042 is a wasteful number, since it uses less digits than its factorization.

1321120042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60050924.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1321120042 is about 36347.2150515002. The cubic root of 1321120042 is about 1097.2714860915.

Adding to 1321120042 its reverse (2400211231), we get a palindrome (3721331273).

The spelling of 1321120042 in words is "one billion, three hundred twenty-one million, one hundred twenty thousand, forty-two".