240561205 has 4 divisors (see below), whose sum is σ = 288673452. Its totient is φ = 192448960.

The previous prime is 240561197. The next prime is 240561229. The reversal of 240561205 is 502165042.

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 130919364 + 109641841 = 11442^2 + 10471^2 .

It is not a de Polignac number, because 240561205 - 2³ = 240561197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 240561205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24056116 + ... + 24056125.

It is an arithmetic number, because the mean of its divisors is an integer number (72168363).

Almost surely, 2^240561205 is an apocalyptic number.

It is an amenable number.

240561205 is a deficient number, since it is larger than the sum of its proper divisors (48112247).

240561205 is an equidigital number, since it uses as much as digits as its factorization.

240561205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48112246.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 240561205 is about 15510.0356221383. The cubic root of 240561205 is about 621.9305114626.

The spelling of 240561205 in words is "two hundred forty million, five hundred sixty-one thousand, two hundred five".