242874855 has 96 divisors (see below), whose sum is σ = 463095360. Its totient is φ = 121927680.

The previous prime is 242874851. The next prime is 242874887. The reversal of 242874855 is 558478242.

242874855 is nontrivially palindromic in base 2.

It is not a de Polignac number, because 242874855 - 2² = 242874851 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 242874855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242874851) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2149279 + ... + 2149391.

It is an arithmetic number, because the mean of its divisors is an integer number (4823910).

Almost surely, 2^242874855 is an apocalyptic number.

242874855 is a deficient number, since it is larger than the sum of its proper divisors (220220505).

242874855 is a wasteful number, since it uses less digits than its factorization.

242874855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 211 counting only the distinct ones).

The product of its digits is 716800, while the sum is 45.

The square root of 242874855 is about 15584.4427234342. The cubic root of 242874855 is about 623.9180042037.

The spelling of 242874855 in words is "two hundred forty-two million, eight hundred seventy-four thousand, eight hundred fifty-five".