4125721320 has 192 divisors, whose sum is σ = 15584400000. Its totient is φ = 927005184.

The previous prime is 4125721283. The next prime is 4125721331. The reversal of 4125721320 is 231275214.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 134806 + ... + 162554.

It is an arithmetic number, because the mean of its divisors is an integer number (81168750).

Almost surely, 2^4125721320 is an apocalyptic number.

4125721320 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 4125721320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7792200000).

4125721320 is an abundant number, since it is smaller than the sum of its proper divisors (11458678680).

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

4125721320 is a wasteful number, since it uses less digits than its factorization.

4125721320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27832 (or 27825 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 4125721320 is about 64231.7781164433. The cubic root of 4125721320 is about 1603.8606407077.

Adding to 4125721320 its reverse (231275214), we get a palindrome (4356996534).

The spelling of 4125721320 in words is "four billion, one hundred twenty-five million, seven hundred twenty-one thousand, three hundred twenty".