240940023 has 4 divisors (see below), whose sum is σ = 321253368. Its totient is φ = 160626680.

The previous prime is 240940013. The next prime is 240940027. The reversal of 240940023 is 320049042.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 240940023 - 2⁸ = 240939767 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 240939975 and 240940002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240940027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40156668 + ... + 40156673.

It is an arithmetic number, because the mean of its divisors is an integer number (80313342).

Almost surely, 2^240940023 is an apocalyptic number.

240940023 is a deficient number, since it is larger than the sum of its proper divisors (80313345).

240940023 is an equidigital number, since it uses as much as digits as its factorization.

240940023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80313344.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 240940023 is about 15522.2428469600. The cubic root of 240940023 is about 622.2567969816.

Adding to 240940023 its reverse (320049042), we get a palindrome (560989065).

The spelling of 240940023 in words is "two hundred forty million, nine hundred forty thousand, twenty-three".