242857386 has 16 divisors (see below), whose sum is σ = 539683200. Its totient is φ = 80952444.

The previous prime is 242857361. The next prime is 242857403. The reversal of 242857386 is 683758242.

It is a Curzon number.

It is an unprimeable number.

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, 2248626 + ... + 2248733.

It is an arithmetic number, because the mean of its divisors is an integer number (33730200).

Almost surely, 2^242857386 is an apocalyptic number.

242857386 is an abundant number, since it is smaller than the sum of its proper divisors (296825814).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

242857386 is a wasteful number, since it uses less digits than its factorization.

242857386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4497370 (or 4497364 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 242857386 is about 15583.8822505818. The cubic root of 242857386 is about 623.9030452174.

The spelling of 242857386 in words is "two hundred forty-two million, eight hundred fifty-seven thousand, three hundred eighty-six".