321442503420 has 96 divisors (see below), whose sum is σ = 902626804800. Its totient is φ = 85471805440.

The previous prime is 321442503397. The next prime is 321442503491. The reversal of 321442503420 is 24305244123.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 57675754 + ... + 57681326.

It is an arithmetic number, because the mean of its divisors is an integer number (9402362550).

Almost surely, 2^321442503420 is an apocalyptic number.

321442503420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

321442503420 is an abundant number, since it is smaller than the sum of its proper divisors (581184301380).

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

321442503420 is a wasteful number, since it uses less digits than its factorization.

321442503420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8175 (or 8173 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 321442503420 its reverse (24305244123), we get a palindrome (345747747543).

The spelling of 321442503420 in words is "three hundred twenty-one billion, four hundred forty-two million, five hundred three thousand, four hundred twenty".