240442321 has 8 divisors (see below), whose sum is σ = 289254080. Its totient is φ = 195246288.

The previous prime is 240442303. The next prime is 240442333. The reversal of 240442321 is 123244042.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 240442321 - 2⁵ = 240442289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 240442292 and 240442301.

It is not an unprimeable number, because it can be changed into a prime (240442351) 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, 903786 + ... + 904051.

It is an arithmetic number, because the mean of its divisors is an integer number (36156760).

Almost surely, 2^240442321 is an apocalyptic number.

It is an amenable number.

240442321 is a deficient number, since it is larger than the sum of its proper divisors (48811759).

240442321 is a wasteful number, since it uses less digits than its factorization.

240442321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1807863.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 240442321 is about 15506.2026621607. The cubic root of 240442321 is about 621.8280430560.

Adding to 240442321 its reverse (123244042), we get a palindrome (363686363).

The spelling of 240442321 in words is "two hundred forty million, four hundred forty-two thousand, three hundred twenty-one".