4240721224 has 16 divisors (see below), whose sum is σ = 8101378620. Its totient is φ = 2080353600.

The previous prime is 4240721203. The next prime is 4240721227. The reversal of 4240721224 is 4221270424.

It can be written as a sum of positive squares in 2 ways, for example, as 3530498724 + 710222500 = 59418^2 + 26650^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4240721192 and 4240721201.

It is not an unprimeable number, because it can be changed into a prime (4240721227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5000427 + ... + 5001274.

Almost surely, 2^4240721224 is an apocalyptic number.

It is an amenable number.

4240721224 is a deficient number, since it is larger than the sum of its proper divisors (3860657396).

4240721224 is a wasteful number, since it uses less digits than its factorization.

4240721224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10001760 (or 10001756 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 28.

The square root of 4240721224 is about 65120.8202036799. The cubic root of 4240721224 is about 1618.6262326146.

Adding to 4240721224 its reverse (4221270424), we get a palindrome (8461991648).

The spelling of 4240721224 in words is "four billion, two hundred forty million, seven hundred twenty-one thousand, two hundred twenty-four".