242578 has 8 divisors (see below), whose sum is σ = 415872. Its totient is φ = 103956.

The previous prime is 242551. The next prime is 242591. The reversal of 242578 is 875242.

242578 is digitally balanced in base 3, 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.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8650 + ... + 8677.

It is an arithmetic number, because the mean of its divisors is an integer number (51984).

2²⁴²⁵⁷⁸ is an apocalyptic number.

242578 is a deficient number, since it is larger than the sum of its proper divisors (173294).

242578 is a wasteful number, since it uses less digits than its factorization.

242578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17336.

The product of its digits is 4480, while the sum is 28.

The square root of 242578 is about 492.5220807233. The cubic root of 242578 is about 62.3663704941.

It can be divided in two parts, 242 and 578, that multiplied together give a square (139876 = 374²).

The spelling of 242578 in words is "two hundred forty-two thousand, five hundred seventy-eight".