240842 has 8 divisors (see below), whose sum is σ = 412896. Its totient is φ = 103212.

The previous prime is 240841. The next prime is 240853. The reversal of 240842 is 248042.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (240841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8588 + ... + 8615.

It is an arithmetic number, because the mean of its divisors is an integer number (51612).

2²⁴⁰⁸⁴² is an apocalyptic number.

240842 is a deficient number, since it is larger than the sum of its proper divisors (172054).

240842 is a wasteful number, since it uses less digits than its factorization.

240842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17212.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 240842 is about 490.7565587947. The cubic root of 240842 is about 62.2172400111.

Adding to 240842 its reverse (248042), we get a palindrome (488884).

The spelling of 240842 in words is "two hundred forty thousand, eight hundred forty-two".