242255816 has 32 divisors (see below), whose sum is σ = 498592800. Its totient is φ = 109434240.

The previous prime is 242255807. The next prime is 242255837. The reversal of 242255816 is 618552242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5900 + ... + 22788.

It is an arithmetic number, because the mean of its divisors is an integer number (15581025).

Almost surely, 2^242255816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 242255816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249296400).

242255816 is an abundant number, since it is smaller than the sum of its proper divisors (256336984).

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

242255816 is a wasteful number, since it uses less digits than its factorization.

242255816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17069 (or 17065 counting only the distinct ones).

The product of its digits is 38400, while the sum is 35.

The square root of 242255816 is about 15564.5692519902. The cubic root of 242255816 is about 623.3874728412.

The spelling of 242255816 in words is "two hundred forty-two million, two hundred fifty-five thousand, eight hundred sixteen".