1321314243442 has 32 divisors (see below), whose sum is σ = 2107490788800. Its totient is φ = 619527384000.

The previous prime is 1321314243371. The next prime is 1321314243449. The reversal of 1321314243442 is 2443424131231.

It is a junction number, because it is equal to n+sod(n) for n = 1321314243398 and 1321314243407.

It is not an unprimeable number, because it can be changed into a prime (1321314243449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15382092 + ... + 15467752.

It is an arithmetic number, because the mean of its divisors is an integer number (65859087150).

Almost surely, 2^{1321314243442} is an apocalyptic number.

1321314243442 is a deficient number, since it is larger than the sum of its proper divisors (786176545358).

1321314243442 is a wasteful number, since it uses less digits than its factorization.

1321314243442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89802.

The product of its digits is 55296, while the sum is 34.

Adding to 1321314243442 its reverse (2443424131231), we get a palindrome (3764738374673).

The spelling of 1321314243442 in words is "one trillion, three hundred twenty-one billion, three hundred fourteen million, two hundred forty-three thousand, four hundred forty-two".