215242534120 has 32 divisors (see below), whose sum is σ = 484312838400. Its totient is φ = 86093967168.

The previous prime is 215242534097. The next prime is 215242534139. The reversal of 215242534120 is 21435242512.

It is a happy number.

215242534120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 1302817 + ... + 1458703.

It is an arithmetic number, because the mean of its divisors is an integer number (15134776200).

Almost surely, 2^215242534120 is an apocalyptic number.

215242534120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215242534120 is an abundant number, since it is smaller than the sum of its proper divisors (269070304280).

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

215242534120 is a wasteful number, since it uses less digits than its factorization.

215242534120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190417 (or 190413 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 215242534120 its reverse (21435242512), we get a palindrome (236677776632).

The spelling of 215242534120 in words is "two hundred fifteen billion, two hundred forty-two million, five hundred thirty-four thousand, one hundred twenty".