290842 has 8 divisors (see below), whose sum is σ = 450432. Its totient is φ = 140700.

The previous prime is 290839. The next prime is 290861. The reversal of 290842 is 248092.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2284 + ... + 2407.

It is an arithmetic number, because the mean of its divisors is an integer number (56304).

2²⁹⁰⁸⁴² is an apocalyptic number.

290842 is a deficient number, since it is larger than the sum of its proper divisors (159590).

290842 is a wasteful number, since it uses less digits than its factorization.

290842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4724.

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

The square root of 290842 is about 539.2976914469. The cubic root of 290842 is about 66.2550583535.

The spelling of 290842 in words is "two hundred ninety thousand, eight hundred forty-two".