240399143 has 2 divisors, whose sum is σ = 240399144. Its totient is φ = 240399142.

The previous prime is 240399121. The next prime is 240399167. The reversal of 240399143 is 341993042.

240399143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 240399143 - 2¹⁴ = 240382759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240399743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120199571 + 120199572.

It is an arithmetic number, because the mean of its divisors is an integer number (120199572).

Almost surely, 2^240399143 is an apocalyptic number.

240399143 is a deficient number, since it is larger than the sum of its proper divisors (1).

240399143 is an equidigital number, since it uses as much as digits as its factorization.

240399143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 240399143 is about 15504.8103180916. The cubic root of 240399143 is about 621.7908187458.

The spelling of 240399143 in words is "two hundred forty million, three hundred ninety-nine thousand, one hundred forty-three".