242872917 has 8 divisors (see below), whose sum is σ = 370092096. Its totient is φ = 138784512.

The previous prime is 242872843. The next prime is 242872951. The reversal of 242872917 is 719278242.

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

It is not a de Polignac number, because 242872917 - 2¹⁴ = 242856533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242877917) by changing a digit.

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, 5782668 + ... + 5782709.

It is an arithmetic number, because the mean of its divisors is an integer number (46261512).

Almost surely, 2^242872917 is an apocalyptic number.

It is an amenable number.

242872917 is a deficient number, since it is larger than the sum of its proper divisors (127219179).

242872917 is a wasteful number, since it uses less digits than its factorization.

242872917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11565387.

The product of its digits is 112896, while the sum is 42.

The square root of 242872917 is about 15584.3805459184. The cubic root of 242872917 is about 623.9163446985.

The spelling of 242872917 in words is "two hundred forty-two million, eight hundred seventy-two thousand, nine hundred seventeen".