242881239 has 8 divisors (see below), whose sum is σ = 324108400. Its totient is φ = 161787456.

The previous prime is 242881181. The next prime is 242881259. The reversal of 242881239 is 932188242.

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

It is not a de Polignac number, because 242881239 - 2¹¹ = 242879191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242881197 and 242881206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242881259) 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, 29014 + ... + 36435.

It is an arithmetic number, because the mean of its divisors is an integer number (40513550).

Almost surely, 2^242881239 is an apocalyptic number.

242881239 is a deficient number, since it is larger than the sum of its proper divisors (81227161).

242881239 is a wasteful number, since it uses less digits than its factorization.

242881239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66689.

The product of its digits is 55296, while the sum is 39.

The square root of 242881239 is about 15584.6475417316. The cubic root of 242881239 is about 623.9234707469.

The spelling of 242881239 in words is "two hundred forty-two million, eight hundred eighty-one thousand, two hundred thirty-nine".