1321170015242 has 32 divisors (see below), whose sum is σ = 2480154107904. Its totient is φ = 512784356400.

The previous prime is 1321170015227. The next prime is 1321170015281. The reversal of 1321170015242 is 2425100711231.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16269434 + ... + 16350437.

It is an arithmetic number, because the mean of its divisors is an integer number (77504815872).

Almost surely, 2^{1321170015242} is an apocalyptic number.

1321170015242 is a deficient number, since it is larger than the sum of its proper divisors (1158984092662).

1321170015242 is a wasteful number, since it uses less digits than its factorization.

1321170015242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32620154.

The product of its (nonzero) digits is 3360, while the sum is 29.

Adding to 1321170015242 its reverse (2425100711231), we get a palindrome (3746270726473).

The spelling of 1321170015242 in words is "one trillion, three hundred twenty-one billion, one hundred seventy million, fifteen thousand, two hundred forty-two".