242508858 has 8 divisors (see below), whose sum is σ = 485017728. Its totient is φ = 80836284.

The previous prime is 242508857. The next prime is 242508887. The reversal of 242508858 is 858805242.

242508858 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

242508858 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (242508853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20209066 + ... + 20209077.

It is an arithmetic number, because the mean of its divisors is an integer number (60627216).

Almost surely, 2^242508858 is an apocalyptic number.

242508858 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

242508858 is a wasteful number, since it uses less digits than its factorization.

242508858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40418148.

The product of its (nonzero) digits is 204800, while the sum is 42.

The square root of 242508858 is about 15572.6959130396. The cubic root of 242508858 is about 623.6044450281.

The spelling of 242508858 in words is "two hundred forty-two million, five hundred eight thousand, eight hundred fifty-eight".