240312042 has 32 divisors (see below), whose sum is σ = 536088960. Its totient is φ = 79794720.

The previous prime is 240312011. The next prime is 240312047. The reversal of 240312042 is 240213042.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (240312047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5742 + ... + 22662.

It is an arithmetic number, because the mean of its divisors is an integer number (16752780).

Almost surely, 2^240312042 is an apocalyptic number.

240312042 is an abundant number, since it is smaller than the sum of its proper divisors (295776918).

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

240312042 is a wasteful number, since it uses less digits than its factorization.

240312042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17195 (or 17189 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 240312042 is about 15502.0012256483. The cubic root of 240312042 is about 621.7157142846.

Adding to 240312042 its reverse (240213042), we get a palindrome (480525084).

The spelling of 240312042 in words is "two hundred forty million, three hundred twelve thousand, forty-two".