242120545225 has 24 divisors (see below), whose sum is σ = 323561165760. Its totient is φ = 178665587520.

The previous prime is 242120545217. The next prime is 242120545237. The reversal of 242120545225 is 522545021242.

242120545225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 242120545225 - 2³ = 242120545217 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 171786 + ... + 716764.

It is an arithmetic number, because the mean of its divisors is an integer number (13481715240).

Almost surely, 2^242120545225 is an apocalyptic number.

242120545225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

242120545225 is a deficient number, since it is larger than the sum of its proper divisors (81440620535).

242120545225 is a wasteful number, since it uses less digits than its factorization.

242120545225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546369 (or 546364 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 34.

Adding to 242120545225 its reverse (522545021242), we get a palindrome (764665566467).

The spelling of 242120545225 in words is "two hundred forty-two billion, one hundred twenty million, five hundred forty-five thousand, two hundred twenty-five".