240420424 has 8 divisors (see below), whose sum is σ = 450788310. Its totient is φ = 120210208.

The previous prime is 240420391. The next prime is 240420431. The reversal of 240420424 is 424024042.

It can be written as a sum of positive squares in only one way, i.e., 204204100 + 36216324 = 14290^2 + 6018^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 240420395 and 240420404.

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 as a sum of consecutive naturals, namely, 15026269 + ... + 15026284.

Almost surely, 2^240420424 is an apocalyptic number.

It is an amenable number.

240420424 is a deficient number, since it is larger than the sum of its proper divisors (210367886).

240420424 is a wasteful number, since it uses less digits than its factorization.

240420424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30052559 (or 30052555 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 240420424 is about 15505.4965737960. The cubic root of 240420424 is about 621.8091659271.

Adding to 240420424 its reverse (424024042), we get a palindrome (664444466).

The spelling of 240420424 in words is "two hundred forty million, four hundred twenty thousand, four hundred twenty-four".