4243122520 has 192 divisors, whose sum is σ = 12151460160. Its totient is φ = 1298488320.

The previous prime is 4243122517. The next prime is 4243122581. The reversal of 4243122520 is 252213424.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3497434 + ... + 3498646.

It is an arithmetic number, because the mean of its divisors is an integer number (63288855).

Almost surely, 2^4243122520 is an apocalyptic number.

4243122520 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 4243122520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6075730080).

4243122520 is an abundant number, since it is smaller than the sum of its proper divisors (7908337640).

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

4243122520 is a wasteful number, since it uses less digits than its factorization.

4243122520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306 (or 1271 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 4243122520 is about 65139.2548314762. The cubic root of 4243122520 is about 1618.9316890919.

Adding to 4243122520 its reverse (252213424), we get a palindrome (4495335944).

The spelling of 4243122520 in words is "four billion, two hundred forty-three million, one hundred twenty-two thousand, five hundred twenty".