242147808 has 108 divisors (see below), whose sum is σ = 801080280. Its totient is φ = 69181056.

The previous prime is 242147791. The next prime is 242147827. The reversal of 242147808 is 808741242.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5533 + ... + 22691.

It is an arithmetic number, because the mean of its divisors is an integer number (7417410).

Almost surely, 2^242147808 is an apocalyptic number.

242147808 is a gapful number since it is divisible by the number (28) 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 242147808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (400540140).

242147808 is an abundant number, since it is smaller than the sum of its proper divisors (558932472).

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

242147808 is a wasteful number, since it uses less digits than its factorization.

242147808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17189 (or 17171 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The square root of 242147808 is about 15561.0991899673. The cubic root of 242147808 is about 623.2948148071.

The spelling of 242147808 in words is "two hundred forty-two million, one hundred forty-seven thousand, eight hundred eight".