242133865 has 8 divisors (see below), whose sum is σ = 293438088. Its totient is φ = 191788800.

The previous prime is 242133851. The next prime is 242133877. The reversal of 242133865 is 568331242.

It can be written as a sum of positive squares in 4 ways, for example, as 115863696 + 126270169 = 10764^2 + 11237^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 242133865 - 2¹³ = 242125673 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 242133865.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239232 + ... + 240241.

It is an arithmetic number, because the mean of its divisors is an integer number (36679761).

Almost surely, 2^242133865 is an apocalyptic number.

It is an amenable number.

242133865 is a deficient number, since it is larger than the sum of its proper divisors (51304223).

242133865 is a wasteful number, since it uses less digits than its factorization.

242133865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479579.

The product of its digits is 34560, while the sum is 34.

The square root of 242133865 is about 15560.6511753204. The cubic root of 242133865 is about 623.2828513615.

The spelling of 242133865 in words is "two hundred forty-two million, one hundred thirty-three thousand, eight hundred sixty-five".