242553121500 has 96 divisors (see below), whose sum is σ = 715990556736. Its totient is φ = 63794764800.

The previous prime is 242553121477. The next prime is 242553121549. The reversal of 242553121500 is 5121355242.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 998049 + ... + 1217048.

It is an arithmetic number, because the mean of its divisors is an integer number (7458234966).

Almost surely, 2^242553121500 is an apocalyptic number.

242553121500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242553121500 is an abundant number, since it is smaller than the sum of its proper divisors (473437435236).

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

242553121500 is a wasteful number, since it uses less digits than its factorization.

242553121500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2215192 (or 2215180 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 242553121500 its reverse (5121355242), we get a palindrome (247674476742).

The spelling of 242553121500 in words is "two hundred forty-two billion, five hundred fifty-three million, one hundred twenty-one thousand, five hundred".