242857863 has 6 divisors (see below), whose sum is σ = 350794704. Its totient is φ = 161905236.

The previous prime is 242857831. The next prime is 242857891. The reversal of 242857863 is 368758242.

It is not a de Polignac number, because 242857863 - 2⁵ = 242857831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242857663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13492095 + ... + 13492112.

It is an arithmetic number, because the mean of its divisors is an integer number (58465784).

Almost surely, 2^242857863 is an apocalyptic number.

242857863 is a deficient number, since it is larger than the sum of its proper divisors (107936841).

242857863 is a wasteful number, since it uses less digits than its factorization.

242857863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26984213 (or 26984210 counting only the distinct ones).

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

The square root of 242857863 is about 15583.8975548481. The cubic root of 242857863 is about 623.9034536897.

The spelling of 242857863 in words is "two hundred forty-two million, eight hundred fifty-seven thousand, eight hundred sixty-three".