320242340 has 96 divisors (see below), whose sum is σ = 806077440. Its totient is φ = 105494400.

The previous prime is 320242337. The next prime is 320242343. The reversal of 320242340 is 43242023.

It is an interprime number because it is at equal distance from previous prime (320242337) and next prime (320242343).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (320242343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94475 + ... + 97805.

It is an arithmetic number, because the mean of its divisors is an integer number (8396640).

Almost surely, 2^320242340 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 320242340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (403038720).

320242340 is an abundant number, since it is smaller than the sum of its proper divisors (485835100).

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

320242340 is a wasteful number, since it uses less digits than its factorization.

320242340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3393 (or 3391 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 320242340 is about 17895.3161469699. The cubic root of 320242340 is about 684.1629999231.

Adding to 320242340 its reverse (43242023), we get a palindrome (363484363).

The spelling of 320242340 in words is "three hundred twenty million, two hundred forty-two thousand, three hundred forty".