240839245 has 4 divisors (see below), whose sum is σ = 289007100. Its totient is φ = 192671392.

The previous prime is 240839243. The next prime is 240839257. The reversal of 240839245 is 542938042.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 130210921 + 110628324 = 11411^2 + 10518^2 .

It is a cyclic number.

It is not a de Polignac number, because 240839245 - 2¹ = 240839243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240839243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24083920 + ... + 24083929.

It is an arithmetic number, because the mean of its divisors is an integer number (72251775).

Almost surely, 2^240839245 is an apocalyptic number.

It is an amenable number.

240839245 is a deficient number, since it is larger than the sum of its proper divisors (48167855).

240839245 is an equidigital number, since it uses as much as digits as its factorization.

240839245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48167854.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 240839245 is about 15518.9962626453. The cubic root of 240839245 is about 622.1700277517.

The spelling of 240839245 in words is "two hundred forty million, eight hundred thirty-nine thousand, two hundred forty-five".