240120321 has 32 divisors (see below), whose sum is σ = 375779328. Its totient is φ = 133539840.

The previous prime is 240120191. The next prime is 240120337. The reversal of 240120321 is 123021042.

240120321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 240120321 - 2⁹ = 240119809 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 240120321.

It is not an unprimeable number, because it can be changed into a prime (240120341) 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, 207681 + ... + 208833.

It is an arithmetic number, because the mean of its divisors is an integer number (11743104).

Almost surely, 2^240120321 is an apocalyptic number.

240120321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

240120321 is a deficient number, since it is larger than the sum of its proper divisors (135659007).

240120321 is a wasteful number, since it uses less digits than its factorization.

240120321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 240120321 is about 15495.8162418119. The cubic root of 240120321 is about 621.5503353192.

Adding to 240120321 its reverse (123021042), we get a palindrome (363141363).

It can be divided in two parts, 2401 and 20321, that added together give a palindrome (22722).

The spelling of 240120321 in words is "two hundred forty million, one hundred twenty thousand, three hundred twenty-one".