240342 has 16 divisors (see below), whose sum is σ = 492912. Its totient is φ = 78080.

The previous prime is 240341. The next prime is 240347. The reversal of 240342 is 243042.

It is a happy 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 240342.

It is not an unprimeable number, because it can be changed into a prime (240341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243 + ... + 734.

It is an arithmetic number, because the mean of its divisors is an integer number (30807).

2²⁴⁰³⁴² is an apocalyptic number.

240342 is an abundant number, since it is smaller than the sum of its proper divisors (252570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

240342 is a wasteful number, since it uses less digits than its factorization.

240342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 240342 is about 490.2468765836. The cubic root of 240342 is about 62.1741548176.

Adding to 240342 its reverse (243042), we get a palindrome (483384).

The spelling of 240342 in words is "two hundred forty thousand, three hundred forty-two", and thus it is an iban number.