240042006 has 24 divisors (see below), whose sum is σ = 550685304. Its totient is φ = 75307200.

The previous prime is 240041987. The next prime is 240042017. The reversal of 240042006 is 600240042.

240042006 is a `hidden beast` number, since 240 + 0 + 420 + 0 + 6 = 666.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 240042006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 391920 + ... + 392531.

It is an arithmetic number, because the mean of its divisors is an integer number (22945221).

Almost surely, 2^240042006 is an apocalyptic number.

240042006 is an abundant number, since it is smaller than the sum of its proper divisors (310643298).

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

240042006 is a wasteful number, since it uses less digits than its factorization.

240042006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784476 (or 784473 counting only the distinct ones).

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

The square root of 240042006 is about 15493.2890633332. The cubic root of 240042006 is about 621.4827553004.

Adding to 240042006 its reverse (600240042), we get a palindrome (840282048).

The spelling of 240042006 in words is "two hundred forty million, forty-two thousand, six".