321012042420440 has 64 divisors (see below), whose sum is σ = 825461792654400. Its totient is φ = 110060971020288.

The previous prime is 321012042420403. The next prime is 321012042420469. The reversal of 321012042420440 is 44024240210123.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 117157616 + ... + 119866304.

It is an arithmetic number, because the mean of its divisors is an integer number (12897840510225).

Almost surely, 2^{321012042420440} is an apocalyptic number.

It is an amenable number.

321012042420440 is an abundant number, since it is smaller than the sum of its proper divisors (504449750233960).

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

321012042420440 is a wasteful number, since it uses less digits than its factorization.

321012042420440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3131964 (or 3131960 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 321012042420440 its reverse (44024240210123), we get a palindrome (365036282630563).

The spelling of 321012042420440 in words is "three hundred twenty-one trillion, twelve billion, forty-two million, four hundred twenty thousand, four hundred forty".