242290 has 8 divisors (see below), whose sum is σ = 436140. Its totient is φ = 96912.

The previous prime is 242279. The next prime is 242309. The reversal of 242290 is 92242.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 221841 + 20449 = 471^2 + 143^2 .

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, 12105 + ... + 12124.

2²⁴²²⁹⁰ is an apocalyptic number.

242290 is a deficient number, since it is larger than the sum of its proper divisors (193850).

242290 is a wasteful number, since it uses less digits than its factorization.

242290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24236.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 242290 is about 492.2296212135. The cubic root of 242290 is about 62.3416792915.

The spelling of 242290 in words is "two hundred forty-two thousand, two hundred ninety".