240999 has 16 divisors (see below), whose sum is σ = 359040. Its totient is φ = 142560.

The previous prime is 240997. The next prime is 241013. The reversal of 240999 is 999042.

It is a happy number.

It is not a de Polignac number, because 240999 - 2¹ = 240997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

240999 is a modest number, since divided by 999 gives 240 as remainder.

240999 is a lucky number.

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 240999.

It is not an unprimeable number, because it can be changed into a prime (240997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2157 + ... + 2265.

It is an arithmetic number, because the mean of its divisors is an integer number (22440).

2²⁴⁰⁹⁹⁹ is an apocalyptic number.

240999 is a deficient number, since it is larger than the sum of its proper divisors (118041).

240999 is a wasteful number, since it uses less digits than its factorization.

240999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 240999 is about 490.9164898432. The cubic root of 240999 is about 62.2307564589.

The spelling of 240999 in words is "two hundred forty thousand, nine hundred ninety-nine".