240587 has 2 divisors, whose sum is σ = 240588. Its totient is φ = 240586.

The previous prime is 240571. The next prime is 240589. The reversal of 240587 is 785042.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 240587 - 2⁴ = 240571 is a prime.

Together with 240589, it forms a pair of twin primes.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 240587.

It is not a weakly prime, because it can be changed into another prime (240589) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120293 + 120294.

It is an arithmetic number, because the mean of its divisors is an integer number (120294).

2²⁴⁰⁵⁸⁷ is an apocalyptic number.

240587 is a deficient number, since it is larger than the sum of its proper divisors (1).

240587 is an equidigital number, since it uses as much as digits as its factorization.

240587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 240587 is about 490.4966870428. The cubic root of 240587 is about 62.1952740212.

The spelling of 240587 in words is "two hundred forty thousand, five hundred eighty-seven".