4243306520 has 32 divisors (see below), whose sum is σ = 9805482000. Its totient is φ = 1651448448.

The previous prime is 4243306429. The next prime is 4243306577. The reversal of 4243306520 is 256033424.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1432070 + ... + 1435029.

Almost surely, 2^4243306520 is an apocalyptic number.

4243306520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4243306520 is an abundant number, since it is smaller than the sum of its proper divisors (5562175480).

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

4243306520 is a wasteful number, since it uses less digits than its factorization.

4243306520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2867147 (or 2867143 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 29.

The square root of 4243306520 is about 65140.6671749684. The cubic root of 4243306520 is about 1618.9550900287.

Adding to 4243306520 its reverse (256033424), we get a palindrome (4499339944).

The spelling of 4243306520 in words is "four billion, two hundred forty-three million, three hundred six thousand, five hundred twenty".