321442540000 has 120 divisors (see below), whose sum is σ = 792051000048. Its totient is φ = 128373120000.

The previous prime is 321442539997. The next prime is 321442540039. The reversal of 321442540000 is 45244123.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12927580 + ... + 12952420.

Almost surely, 2^321442540000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321442540000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (396025500024).

321442540000 is an abundant number, since it is smaller than the sum of its proper divisors (470608460048).

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

321442540000 is an equidigital number, since it uses as much as digits as its factorization.

321442540000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25518 (or 25495 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 321442540000 its reverse (45244123), we get a palindrome (321487784123).

The spelling of 321442540000 in words is "three hundred twenty-one billion, four hundred forty-two million, five hundred forty thousand".