240421312 has 28 divisors (see below), whose sum is σ = 478272856. Its totient is φ = 119911680.

The previous prime is 240421297. The next prime is 240421331. The reversal of 240421312 is 213124042.

It is a self number, because there is not a number n which added to its sum of digits gives 240421312.

It is a congruent number.

It is an unprimeable number.

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, 22483 + ... + 31405.

Almost surely, 2^240421312 is an apocalyptic number.

It is an amenable number.

240421312 is a deficient number, since it is larger than the sum of its proper divisors (237851544).

240421312 is an equidigital number, since it uses as much as digits as its factorization.

240421312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9356 (or 9346 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 240421312 is about 15505.5252087764. The cubic root of 240421312 is about 621.8099314831.

Adding to 240421312 its reverse (213124042), we get a palindrome (453545354).

It can be divided in two parts, 2404 and 21312, that added together give a square (23716 = 154²).

The spelling of 240421312 in words is "two hundred forty million, four hundred twenty-one thousand, three hundred twelve".