4243123320 has 64 divisors (see below), whose sum is σ = 13399344000. Its totient is φ = 1071946368.

The previous prime is 4243123289. The next prime is 4243123349. The reversal of 4243123320 is 233213424.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 928230 + ... + 932789.

It is an arithmetic number, because the mean of its divisors is an integer number (209364750).

Almost surely, 2^4243123320 is an apocalyptic number.

4243123320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4243123320 is an abundant number, since it is smaller than the sum of its proper divisors (9156220680).

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

4243123320 is a wasteful number, since it uses less digits than its factorization.

4243123320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1861052 (or 1861048 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 4243123320 is about 65139.2609721664. The cubic root of 4243123320 is about 1618.9317908366.

Adding to 4243123320 its reverse (233213424), we get a palindrome (4476336744).

The spelling of 4243123320 in words is "four billion, two hundred forty-three million, one hundred twenty-three thousand, three hundred twenty".