240440143 has 4 divisors (see below), whose sum is σ = 241327648. Its totient is φ = 239552640.

The previous prime is 240440141. The next prime is 240440147. The reversal of 240440143 is 341044042.

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

It is a cyclic number.

It is not a de Polignac number, because 240440143 - 2¹ = 240440141 is a prime.

It is a super-2 number, since 2×240440143² = 115622924731720898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240440141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 443346 + ... + 443887.

It is an arithmetic number, because the mean of its divisors is an integer number (60331912).

Almost surely, 2^240440143 is an apocalyptic number.

240440143 is a deficient number, since it is larger than the sum of its proper divisors (887505).

240440143 is an equidigital number, since it uses as much as digits as its factorization.

240440143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887504.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 240440143 is about 15506.1324320412. The cubic root of 240440143 is about 621.8261654808.

Adding to 240440143 its reverse (341044042), we get a palindrome (581484185).

The spelling of 240440143 in words is "two hundred forty million, four hundred forty thousand, one hundred forty-three".