1321203064142 has 32 divisors (see below), whose sum is σ = 2208116951040. Its totient is φ = 588771128160.

The previous prime is 1321203064043. The next prime is 1321203064169. The reversal of 1321203064142 is 2414603021231.

It is a congruent number.

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, 1513148 + ... + 2220815.

It is an arithmetic number, because the mean of its divisors is an integer number (69003654720).

Almost surely, 2^{1321203064142} is an apocalyptic number.

1321203064142 is a deficient number, since it is larger than the sum of its proper divisors (886913886898).

1321203064142 is a wasteful number, since it uses less digits than its factorization.

1321203064142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3734448.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 1321203064142 its reverse (2414603021231), we get a palindrome (3735806085373).

The spelling of 1321203064142 in words is "one trillion, three hundred twenty-one billion, two hundred three million, sixty-four thousand, one hundred forty-two".