242890 has 16 divisors (see below), whose sum is σ = 443232. Its totient is φ = 95824.

The previous prime is 242887. The next prime is 242911. The reversal of 242890 is 98242.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 957 + ... + 1183.

It is an arithmetic number, because the mean of its divisors is an integer number (27702).

2²⁴²⁸⁹⁰ is an apocalyptic number.

242890 is a deficient number, since it is larger than the sum of its proper divisors (200342).

242890 is a wasteful number, since it uses less digits than its factorization.

242890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 242890 is about 492.8387160116. The cubic root of 242890 is about 62.3930972531.

The spelling of 242890 in words is "two hundred forty-two thousand, eight hundred ninety".