4321240320 has 72 divisors (see below), whose sum is σ = 13800973536. Its totient is φ = 1152329728.

The previous prime is 4321240309. The next prime is 4321240321. The reversal of 4321240320 is 230421234.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4321240321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 558822 + ... + 566501.

It is an arithmetic number, because the mean of its divisors is an integer number (191680188).

Almost surely, 2^4321240320 is an apocalyptic number.

4321240320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4321240320 is an abundant number, since it is smaller than the sum of its proper divisors (9479733216).

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

4321240320 is a wasteful number, since it uses less digits than its factorization.

4321240320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125347 (or 1125333 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 4321240320 is about 65736.1416573866. The cubic root of 4321240320 is about 1628.8064229338.

Adding to 4321240320 its reverse (230421234), we get a palindrome (4551661554).

The spelling of 4321240320 in words is "four billion, three hundred twenty-one million, two hundred forty thousand, three hundred twenty".