1321442234240 has 64 divisors (see below), whose sum is σ = 3161114640000. Its totient is φ = 528235259904.

The previous prime is 1321442234213. The next prime is 1321442234279. The reversal of 1321442234240 is 424322441231.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 1321442234197 and 1321442234206.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 324881 + ... + 1657839.

It is an arithmetic number, because the mean of its divisors is an integer number (49392416250).

Almost surely, 2^{1321442234240} is an apocalyptic number.

1321442234240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321442234240 is an abundant number, since it is smaller than the sum of its proper divisors (1839672405760).

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

1321442234240 is a wasteful number, since it uses less digits than its factorization.

1321442234240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334527 (or 1334515 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 1321442234240 its reverse (424322441231), we get a palindrome (1745764675471).

The spelling of 1321442234240 in words is "one trillion, three hundred twenty-one billion, four hundred forty-two million, two hundred thirty-four thousand, two hundred forty".