240400424 has 16 divisors (see below), whose sum is σ = 491728320. Its totient is φ = 109272880.

The previous prime is 240400423. The next prime is 240400427. The reversal of 240400424 is 424004042.

It is a junction number, because it is equal to n+sod(n) for n = 240400396 and 240400405.

It is not an unprimeable number, because it can be changed into a prime (240400423) 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 3 ways as a sum of consecutive naturals, for example, 1365824 + ... + 1365999.

It is an arithmetic number, because the mean of its divisors is an integer number (30733020).

Almost surely, 2^240400424 is an apocalyptic number.

It is an amenable number.

240400424 is an abundant number, since it is smaller than the sum of its proper divisors (251327896).

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

240400424 is a wasteful number, since it uses less digits than its factorization.

240400424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2731840 (or 2731836 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 240400424 is about 15504.8516277970. The cubic root of 240400424 is about 621.7919231766.

Adding to 240400424 its reverse (424004042), we get a palindrome (664404466).

The spelling of 240400424 in words is "two hundred forty million, four hundred thousand, four hundred twenty-four".