240123321 has 6 divisors (see below), whose sum is σ = 346844810. Its totient is φ = 160082208.

The previous prime is 240123319. The next prime is 240123341. The reversal of 240123321 is 123321042.

It can be written as a sum of positive squares in only one way, i.e., 237498921 + 2624400 = 15411^2 + 1620^2 .

It is not a de Polignac number, because 240123321 - 2¹ = 240123319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 240123294 and 240123303.

It is not an unprimeable number, because it can be changed into a prime (240123341) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13340176 + ... + 13340193.

Almost surely, 2^240123321 is an apocalyptic number.

It is an amenable number.

240123321 is a deficient number, since it is larger than the sum of its proper divisors (106721489).

240123321 is a wasteful number, since it uses less digits than its factorization.

240123321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26680375 (or 26680372 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 240123321 is about 15495.9130418314. The cubic root of 240123321 is about 621.5529238037.

Adding to 240123321 its reverse (123321042), we get a palindrome (363444363).

The spelling of 240123321 in words is "two hundred forty million, one hundred twenty-three thousand, three hundred twenty-one".