290242 has 4 divisors (see below), whose sum is σ = 435366. Its totient is φ = 145120.

The previous prime is 290233. The next prime is 290243. The reversal of 290242 is 242092.

It is a happy number.

290242 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 281961 + 8281 = 531^2 + 91^2 .

It is not an unprimeable number, because it can be changed into a prime (290243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72559 + ... + 72562.

2²⁹⁰²⁴² is an apocalyptic number.

290242 is a deficient number, since it is larger than the sum of its proper divisors (145124).

290242 is a wasteful number, since it uses less digits than its factorization.

290242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145123.

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

The square root of 290242 is about 538.7411252169. The cubic root of 290242 is about 66.2094661272.

The spelling of 290242 in words is "two hundred ninety thousand, two hundred forty-two".