240287 has 2 divisors, whose sum is σ = 240288. Its totient is φ = 240286.

The previous prime is 240283. The next prime is 240319. The reversal of 240287 is 782042.

240287 is nontrivially palindromic in base 12.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 240287 - 2² = 240283 is a prime.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 240287.

It is not a weakly prime, because it can be changed into another prime (240283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120143 + 120144.

It is an arithmetic number, because the mean of its divisors is an integer number (120144).

2²⁴⁰²⁸⁷ is an apocalyptic number.

240287 is a deficient number, since it is larger than the sum of its proper divisors (1).

240287 is an equidigital number, since it uses as much as digits as its factorization.

240287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 240287 is about 490.1907791870. The cubic root of 240287 is about 62.1694117995.

The spelling of 240287 in words is "two hundred forty thousand, two hundred eighty-seven".