240513243 has 4 divisors (see below), whose sum is σ = 320684328. Its totient is φ = 160342160.

The previous prime is 240513223. The next prime is 240513307. The reversal of 240513243 is 342315042.

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 240513243 - 2¹² = 240509147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (240513223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40085538 + ... + 40085543.

It is an arithmetic number, because the mean of its divisors is an integer number (80171082).

Almost surely, 2^240513243 is an apocalyptic number.

240513243 is a deficient number, since it is larger than the sum of its proper divisors (80171085).

240513243 is an equidigital number, since it uses as much as digits as its factorization.

240513243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80171084.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 240513243 is about 15508.4893848498. The cubic root of 240513243 is about 621.8891761555.

Adding to 240513243 its reverse (342315042), we get a palindrome (582828285).

The spelling of 240513243 in words is "two hundred forty million, five hundred thirteen thousand, two hundred forty-three".