242153320520 has 32 divisors (see below), whose sum is σ = 568533885120. Its totient is φ = 92649965760.

The previous prime is 242153320477. The next prime is 242153320561. The reversal of 242153320520 is 25023351242.

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, 131604146 + ... + 131605985.

It is an arithmetic number, because the mean of its divisors is an integer number (17766683910).

Almost surely, 2^242153320520 is an apocalyptic number.

242153320520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242153320520 is an abundant number, since it is smaller than the sum of its proper divisors (326380564600).

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

242153320520 is a wasteful number, since it uses less digits than its factorization.

242153320520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263210165 (or 263210161 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 242153320520 its reverse (25023351242), we get a palindrome (267176671762).

The spelling of 242153320520 in words is "two hundred forty-two billion, one hundred fifty-three million, three hundred twenty thousand, five hundred twenty".