240143871 has 16 divisors (see below), whose sum is σ = 352396800. Its totient is φ = 144251520.

The previous prime is 240143837. The next prime is 240143909. The reversal of 240143871 is 178341042.

It is not a de Polignac number, because 240143871 - 2⁶ = 240143807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240143671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28471 + ... + 35928.

It is an arithmetic number, because the mean of its divisors is an integer number (22024800).

Almost surely, 2^240143871 is an apocalyptic number.

240143871 is a deficient number, since it is larger than the sum of its proper divisors (112252929).

240143871 is a wasteful number, since it uses less digits than its factorization.

240143871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64526.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 240143871 is about 15496.5761057080. The cubic root of 240143871 is about 621.5706543434.

The spelling of 240143871 in words is "two hundred forty million, one hundred forty-three thousand, eight hundred seventy-one".