321042340 has 48 divisors (see below), whose sum is σ = 700886592. Its totient is φ = 123417216.

The previous prime is 321042317. The next prime is 321042347. The reversal of 321042340 is 43240123.

321042340 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (321042347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58807 + ... + 64033.

It is an arithmetic number, because the mean of its divisors is an integer number (14601804).

Almost surely, 2^321042340 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 321042340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (350443296).

321042340 is an abundant number, since it is smaller than the sum of its proper divisors (379844252).

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

321042340 is a wasteful number, since it uses less digits than its factorization.

321042340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5356 (or 5354 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 321042340 is about 17917.6544223846. The cubic root of 321042340 is about 684.7322305751.

Adding to 321042340 its reverse (43240123), we get a palindrome (364282463).

The spelling of 321042340 in words is "three hundred twenty-one million, forty-two thousand, three hundred forty".