240420512 has 12 divisors (see below), whose sum is σ = 473327946. Its totient is φ = 120210240.

The previous prime is 240420503. The next prime is 240420517. The reversal of 240420512 is 215024042.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 239506576 + 913936 = 15476^2 + 956^2 .

It is not an unprimeable number, because it can be changed into a prime (240420517) 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 as a sum of consecutive naturals, namely, 3756539 + ... + 3756602.

Almost surely, 2^240420512 is an apocalyptic number.

It is an amenable number.

240420512 is a deficient number, since it is larger than the sum of its proper divisors (232907434).

240420512 is an equidigital number, since it uses as much as digits as its factorization.

240420512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7513151 (or 7513143 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 240420512 is about 15505.4994114991. The cubic root of 240420512 is about 621.8092417931.

Adding to 240420512 its reverse (215024042), we get a palindrome (455444554).

The spelling of 240420512 in words is "two hundred forty million, four hundred twenty thousand, five hundred twelve".