240400040 has 32 divisors (see below), whose sum is σ = 558351360. Its totient is φ = 93057600.

The previous prime is 240400033. The next prime is 240400051. The reversal of 240400040 is 40004042.

It is a junction number, because it is equal to n+sod(n) for n = 240399988 and 240400024.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95696 + ... + 98175.

It is an arithmetic number, because the mean of its divisors is an integer number (17448480).

Almost surely, 2^240400040 is an apocalyptic number.

240400040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240400040 is an abundant number, since it is smaller than the sum of its proper divisors (317951320).

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

240400040 is a wasteful number, since it uses less digits than its factorization.

240400040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193913 (or 193909 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 240400040 is about 15504.8392445714. The cubic root of 240400040 is about 621.7915921064.

Adding to 240400040 its reverse (40004042), we get a palindrome (280404082).

The spelling of 240400040 in words is "two hundred forty million, four hundred thousand, forty".