4240021444 has 12 divisors (see below), whose sum is σ = 7675901100. Its totient is φ = 2046906848.

The previous prime is 4240021441. The next prime is 4240021451. The reversal of 4240021444 is 4441200424.

It can be written as a sum of positive squares in 2 ways, for example, as 2179769344 + 2060252100 = 46688^2 + 45390^2 .

It is not an unprimeable number, because it can be changed into a prime (4240021441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18275839 + ... + 18276070.

It is an arithmetic number, because the mean of its divisors is an integer number (639658425).

Almost surely, 2^4240021444 is an apocalyptic number.

It is an amenable number.

4240021444 is a deficient number, since it is larger than the sum of its proper divisors (3435879656).

4240021444 is a wasteful number, since it uses less digits than its factorization.

4240021444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36551942 (or 36551940 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

The square root of 4240021444 is about 65115.4470459967. The cubic root of 4240021444 is about 1618.5371955135.

Adding to 4240021444 its reverse (4441200424), we get a palindrome (8681221868).

The spelling of 4240021444 in words is "four billion, two hundred forty million, twenty-one thousand, four hundred forty-four".