242081979 has 8 divisors (see below), whose sum is σ = 322862592. Its totient is φ = 161344680.

The previous prime is 242081971. The next prime is 242081981. The reversal of 242081979 is 979180242.

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

It is not a de Polignac number, because 242081979 - 2³ = 242081971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 242081979.

It is not an unprimeable number, because it can be changed into a prime (242081971) 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, 5914 + ... + 22784.

It is an arithmetic number, because the mean of its divisors is an integer number (40357824).

Almost surely, 2^242081979 is an apocalyptic number.

242081979 is a deficient number, since it is larger than the sum of its proper divisors (80780613).

242081979 is a wasteful number, since it uses less digits than its factorization.

242081979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21657.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 242081979 is about 15558.9838678495. The cubic root of 242081979 is about 623.2383278300.

The spelling of 242081979 in words is "two hundred forty-two million, eighty-one thousand, nine hundred seventy-nine".