2400140243 has 2 divisors, whose sum is σ = 2400140244. Its totient is φ = 2400140242.

The previous prime is 2400140233. The next prime is 2400140269. The reversal of 2400140243 is 3420410042.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2400140243 - 2⁶ = 2400140179 is a prime.

It is not a weakly prime, because it can be changed into another prime (2400140203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1200070121 + 1200070122.

It is an arithmetic number, because the mean of its divisors is an integer number (1200070122).

Almost surely, 2^2400140243 is an apocalyptic number.

2400140243 is a deficient number, since it is larger than the sum of its proper divisors (1).

2400140243 is an equidigital number, since it uses as much as digits as its factorization.

2400140243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 2400140243 is about 48991.2261838791. The cubic root of 2400140243 is about 1338.8919783467.

Adding to 2400140243 its reverse (3420410042), we get a palindrome (5820550285).

The spelling of 2400140243 in words is "two billion, four hundred million, one hundred forty thousand, two hundred forty-three".