240291 has 6 divisors (see below), whose sum is σ = 347100. Its totient is φ = 160188.

The previous prime is 240287. The next prime is 240319. The reversal of 240291 is 192042.

240291 is nontrivially palindromic in base 16.

It is not a de Polignac number, because 240291 - 2² = 240287 is a prime.

It is not an unprimeable number, because it can be changed into a prime (240271) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13341 + ... + 13358.

It is an arithmetic number, because the mean of its divisors is an integer number (57850).

2²⁴⁰²⁹¹ is an apocalyptic number.

240291 is a deficient number, since it is larger than the sum of its proper divisors (106809).

240291 is a wasteful number, since it uses less digits than its factorization.

240291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26705 (or 26702 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 240291 is about 490.1948592142. The cubic root of 240291 is about 62.1697567706.

The spelling of 240291 in words is "two hundred forty thousand, two hundred ninety-one".