240205138 has 16 divisors (see below), whose sum is σ = 390376800. Its totient is φ = 110408256.

The previous prime is 240205111. The next prime is 240205157. The reversal of 240205138 is 831502042.

240205138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 80688 + ... + 83611.

It is an arithmetic number, because the mean of its divisors is an integer number (24398550).

Almost surely, 2^240205138 is an apocalyptic number.

240205138 is a deficient number, since it is larger than the sum of its proper divisors (150171662).

240205138 is a wasteful number, since it uses less digits than its factorization.

240205138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164361.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 240205138 is about 15498.5527711461. The cubic root of 240205138 is about 621.6235095076.

The spelling of 240205138 in words is "two hundred forty million, two hundred five thousand, one hundred thirty-eight".