242506173291 has 8 divisors (see below), whose sum is σ = 324729297360. Its totient is φ = 160976915712.

The previous prime is 242506173281. The next prime is 242506173311. The reversal of 242506173291 is 192371605242.

It is a happy number.

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

It is not a de Polignac number, because 242506173291 - 2¹⁰ = 242506172267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242506173281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173465806 + ... + 173467203.

It is an arithmetic number, because the mean of its divisors is an integer number (40591162170).

Almost surely, 2^242506173291 is an apocalyptic number.

242506173291 is a deficient number, since it is larger than the sum of its proper divisors (82223124069).

242506173291 is a wasteful number, since it uses less digits than its factorization.

242506173291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346933245.

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 242506173291 in words is "two hundred forty-two billion, five hundred six million, one hundred seventy-three thousand, two hundred ninety-one".