240142145 has 8 divisors (see below), whose sum is σ = 291024360. Its totient is φ = 190211200.

The previous prime is 240142139. The next prime is 240142169. The reversal of 240142145 is 541241042.

It can be written as a sum of positive squares in 4 ways, for example, as 42823936 + 197318209 = 6544^2 + 14047^2 .

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

It is not a de Polignac number, because 240142145 - 2⁶ = 240142081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 240142145.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237260 + ... + 238269.

It is an arithmetic number, because the mean of its divisors is an integer number (36378045).

Almost surely, 2^240142145 is an apocalyptic number.

It is an amenable number.

240142145 is a deficient number, since it is larger than the sum of its proper divisors (50882215).

240142145 is a wasteful number, since it uses less digits than its factorization.

240142145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475635.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 240142145 is about 15496.5204158869. The cubic root of 240142145 is about 621.5691651896.

Adding to 240142145 its reverse (541241042), we get a palindrome (781383187).

The spelling of 240142145 in words is "two hundred forty million, one hundred forty-two thousand, one hundred forty-five".