4240240020 has 36 divisors (see below), whose sum is σ = 12862061940. Its totient is φ = 1130730624.

The previous prime is 4240240001. The next prime is 4240240027. The reversal of 4240240020 is 200420424.

4240240020 is a `hidden beast` number, since 4 + 240 + 2 + 400 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1817828496 + 2422411524 = 42636^2 + 49218^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 4240239975 and 4240240002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4240240027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11778265 + ... + 11778624.

Almost surely, 2^4240240020 is an apocalyptic number.

It is an amenable number.

4240240020 is an abundant number, since it is smaller than the sum of its proper divisors (8621821920).

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

4240240020 is a wasteful number, since it uses less digits than its factorization.

4240240020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23556904 (or 23556899 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 4240240020 is about 65117.1253972409. The cubic root of 4240240020 is about 1618.5650072681.

Adding to 4240240020 its reverse (200420424), we get a palindrome (4440660444).

The spelling of 4240240020 in words is "four billion, two hundred forty million, two hundred forty thousand, twenty".