240243851 has 2 divisors, whose sum is σ = 240243852. Its totient is φ = 240243850.

The previous prime is 240243827. The next prime is 240243937. The reversal of 240243851 is 158342042.

It is a happy number.

240243851 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 240243851 - 2¹⁴ = 240227467 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (240243821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120121925 + 120121926.

It is an arithmetic number, because the mean of its divisors is an integer number (120121926).

Almost surely, 2^240243851 is an apocalyptic number.

240243851 is a deficient number, since it is larger than the sum of its proper divisors (1).

240243851 is an equidigital number, since it uses as much as digits as its factorization.

240243851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 240243851 is about 15499.8016438921. The cubic root of 240243851 is about 621.6569026571.

Adding to 240243851 its reverse (158342042), we get a palindrome (398585893).

The spelling of 240243851 in words is "two hundred forty million, two hundred forty-three thousand, eight hundred fifty-one".