1321024343142 has 64 divisors (see below), whose sum is σ = 3062469855744. Its totient is φ = 372094406400.

The previous prime is 1321024343131. The next prime is 1321024343213. The reversal of 1321024343142 is 2413434201231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 320113 + ... + 1656659.

It is an arithmetic number, because the mean of its divisors is an integer number (47851091496).

Almost surely, 2^{1321024343142} is an apocalyptic number.

1321024343142 is an abundant number, since it is smaller than the sum of its proper divisors (1741445512602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321024343142 is a wasteful number, since it uses less digits than its factorization.

1321024343142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336893.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 1321024343142 its reverse (2413434201231), we get a palindrome (3734458544373).

The spelling of 1321024343142 in words is "one trillion, three hundred twenty-one billion, twenty-four million, three hundred forty-three thousand, one hundred forty-two".