240540305 has 8 divisors (see below), whose sum is σ = 289118400. Its totient is φ = 192118896.

The previous prime is 240540299. The next prime is 240540347. The reversal of 240540305 is 503045042.

240540305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240540305 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35765 + ... + 41954.

It is an arithmetic number, because the mean of its divisors is an integer number (36139800).

Almost surely, 2^240540305 is an apocalyptic number.

It is an amenable number.

240540305 is a deficient number, since it is larger than the sum of its proper divisors (48578095).

240540305 is an equidigital number, since it uses as much as digits as its factorization.

240540305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78343.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 240540305 is about 15509.3618501858. The cubic root of 240540305 is about 621.9124997967.

Adding to 240540305 its reverse (503045042), we get a palindrome (743585347).

The spelling of 240540305 in words is "two hundred forty million, five hundred forty thousand, three hundred five".