4243220240 has 80 divisors (see below), whose sum is σ = 11293979520. Its totient is φ = 1452349440.

The previous prime is 4243220237. The next prime is 4243220249. The reversal of 4243220240 is 420223424.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (4243220249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 340520 + ... + 352760.

It is an arithmetic number, because the mean of its divisors is an integer number (141174744).

Almost surely, 2^4243220240 is an apocalyptic number.

4243220240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4243220240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5646989760).

4243220240 is an abundant number, since it is smaller than the sum of its proper divisors (7050759280).

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

4243220240 is a wasteful number, since it uses less digits than its factorization.

4243220240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12880 (or 12874 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 4243220240 is about 65140.0049124960. The cubic root of 4243220240 is about 1618.9441171084.

Adding to 4243220240 its reverse (420223424), we get a palindrome (4663443664).

The spelling of 4243220240 in words is "four billion, two hundred forty-three million, two hundred twenty thousand, two hundred forty".