242187500 has 60 divisors (see below), whose sum is σ = 546874944. Its totient is φ = 93750000.

The previous prime is 242187487. The next prime is 242187521. The reversal of 242187500 is 5781242.

It is a nialpdrome in base 5.

It is a zygodrome in base 5.

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 19 ways as a sum of consecutive naturals, for example, 7812485 + ... + 7812515.

Almost surely, 2^242187500 is an apocalyptic number.

242187500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 242187500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273437472).

242187500 is an abundant number, since it is smaller than the sum of its proper divisors (304687444).

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

242187500 is an frugal number, since it uses more digits than its factorization.

242187500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 38 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 242187500 is about 15562.3744974859. The cubic root of 242187500 is about 623.3288690298.

The spelling of 242187500 in words is "two hundred forty-two million, one hundred eighty-seven thousand, five hundred".