242542165 has 8 divisors (see below), whose sum is σ = 291323448. Its totient is φ = 193851840.

The previous prime is 242542147. The next prime is 242542189. The reversal of 242542165 is 561245242.

It can be written as a sum of positive squares in 4 ways, for example, as 77316849 + 165225316 = 8793^2 + 12854^2 .

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

It is not a de Polignac number, because 242542165 - 2⁵ = 242542133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16726 + ... + 27655.

It is an arithmetic number, because the mean of its divisors is an integer number (36415431).

Almost surely, 2^242542165 is an apocalyptic number.

It is an amenable number.

242542165 is a deficient number, since it is larger than the sum of its proper divisors (48781283).

242542165 is a wasteful number, since it uses less digits than its factorization.

242542165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45479.

The product of its digits is 19200, while the sum is 31.

The square root of 242542165 is about 15573.7652801113. The cubic root of 242542165 is about 623.6329930471.

The spelling of 242542165 in words is "two hundred forty-two million, five hundred forty-two thousand, one hundred sixty-five".