242857671905 has 16 divisors (see below), whose sum is σ = 301159197504. Its totient is φ = 187888948800.

The previous prime is 242857671869. The next prime is 242857671913. The reversal of 242857671905 is 509176758242.

It is not a de Polignac number, because 242857671905 - 2¹⁸ = 242857409761 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5570219 + ... + 5613648.

It is an arithmetic number, because the mean of its divisors is an integer number (18822449844).

Almost surely, 2^242857671905 is an apocalyptic number.

It is an amenable number.

242857671905 is a deficient number, since it is larger than the sum of its proper divisors (58301525599).

242857671905 is a wasteful number, since it uses less digits than its factorization.

242857671905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11184016.

The product of its (nonzero) digits is 8467200, while the sum is 56.

The spelling of 242857671905 in words is "two hundred forty-two billion, eight hundred fifty-seven million, six hundred seventy-one thousand, nine hundred five".