240143143 has 4 divisors (see below), whose sum is σ = 247889728. Its totient is φ = 232396560.

The previous prime is 240143047. The next prime is 240143179. The reversal of 240143143 is 341341042.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240143143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240143243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3873246 + ... + 3873307.

It is an arithmetic number, because the mean of its divisors is an integer number (61972432).

Almost surely, 2^240143143 is an apocalyptic number.

240143143 is a deficient number, since it is larger than the sum of its proper divisors (7746585).

240143143 is an equidigital number, since it uses as much as digits as its factorization.

240143143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7746584.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 240143143 is about 15496.5526166306. The cubic root of 240143143 is about 621.5700262423.

Adding to 240143143 its reverse (341341042), we get a palindrome (581484185).

The spelling of 240143143 in words is "two hundred forty million, one hundred forty-three thousand, one hundred forty-three".