242878 has 4 divisors (see below), whose sum is σ = 364320. Its totient is φ = 121438.

The previous prime is 242873. The next prime is 242887. The reversal of 242878 is 878242.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242873) by changing a digit.

242878 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60718 + ... + 60721.

It is an arithmetic number, because the mean of its divisors is an integer number (91080).

2²⁴²⁸⁷⁸ is an apocalyptic number.

242878 is a deficient number, since it is larger than the sum of its proper divisors (121442).

242878 is a wasteful number, since it uses less digits than its factorization.

242878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121441.

The product of its digits is 7168, while the sum is 31.

The square root of 242878 is about 492.8265414930. The cubic root of 242878 is about 62.3920697242.

The spelling of 242878 in words is "two hundred forty-two thousand, eight hundred seventy-eight".