242509171 has 8 divisors (see below), whose sum is σ = 254732544. Its totient is φ = 230425800.

The previous prime is 242509153. The next prime is 242509177. The reversal of 242509171 is 171905242.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242509171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242509177) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31441 + ... + 38386.

It is an arithmetic number, because the mean of its divisors is an integer number (31841568).

Almost surely, 2^242509171 is an apocalyptic number.

242509171 is a deficient number, since it is larger than the sum of its proper divisors (12223373).

242509171 is a wasteful number, since it uses less digits than its factorization.

242509171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70001.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 242509171 is about 15572.7059626771. The cubic root of 242509171 is about 623.6047133181.

The spelling of 242509171 in words is "two hundred forty-two million, five hundred nine thousand, one hundred seventy-one".