242855658 has 48 divisors (see below), whose sum is σ = 558413856. Its totient is φ = 79062480.

The previous prime is 242855633. The next prime is 242855671. The reversal of 242855658 is 856558242.

It is a happy number.

242855658 is a `hidden beast` number, since 2 + 4 + 2 + 85 + 565 + 8 = 666.

It is a super-2 number, since 2×242855658² = 117957741245225928, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15088 + ... + 26708.

It is an arithmetic number, because the mean of its divisors is an integer number (11633622).

Almost surely, 2^242855658 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 242855658, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279206928).

242855658 is an abundant number, since it is smaller than the sum of its proper divisors (315558198).

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

242855658 is a wasteful number, since it uses less digits than its factorization.

242855658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11681 (or 11669 counting only the distinct ones).

The product of its digits is 768000, while the sum is 45.

The square root of 242855658 is about 15583.8268085859. The cubic root of 242855658 is about 623.9015654641.

The spelling of 242855658 in words is "two hundred forty-two million, eight hundred fifty-five thousand, six hundred fifty-eight".