4240244021 has 16 divisors (see below), whose sum is σ = 4600963584. Its totient is φ = 3884531904.

The previous prime is 4240243933. The next prime is 4240244033. The reversal of 4240244021 is 1204420424.

It is a cyclic number.

It is not a de Polignac number, because 4240244021 - 2²² = 4236049717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4240244521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2705180 + ... + 2706746.

It is an arithmetic number, because the mean of its divisors is an integer number (287560224).

Almost surely, 2^4240244021 is an apocalyptic number.

It is an amenable number.

4240244021 is a deficient number, since it is larger than the sum of its proper divisors (360719563).

4240244021 is a wasteful number, since it uses less digits than its factorization.

4240244021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3020.

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 4240244021 is about 65117.1561187987. The cubic root of 4240244021 is about 1618.5655163490.

Adding to 4240244021 its reverse (1204420424), we get a palindrome (5444664445).

The spelling of 4240244021 in words is "four billion, two hundred forty million, two hundred forty-four thousand, twenty-one".