321420004032340 has 96 divisors (see below), whose sum is σ = 688794303456000. Its totient is φ = 125958575508480.

The previous prime is 321420004032317. The next prime is 321420004032343. The reversal of 321420004032340 is 43230400024123.

It is a junction number, because it is equal to n+sod(n) for n = 321420004032299 and 321420004032308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321420004032343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 623993616 + ... + 624508504.

It is an arithmetic number, because the mean of its divisors is an integer number (7174940661000).

Almost surely, 2^{321420004032340} is an apocalyptic number.

It is an amenable number.

321420004032340 is an abundant number, since it is smaller than the sum of its proper divisors (367374299423660).

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

321420004032340 is a wasteful number, since it uses less digits than its factorization.

321420004032340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517505 (or 517503 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 321420004032340 its reverse (43230400024123), we get a palindrome (364650404056463).

The spelling of 321420004032340 in words is "three hundred twenty-one trillion, four hundred twenty billion, four million, thirty-two thousand, three hundred forty".