291242 has 16 divisors (see below), whose sum is σ = 508032. Its totient is φ = 122640.

The previous prime is 291217. The next prime is 291253. The reversal of 291242 is 242192.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 291242.

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, 848 + ... + 1140.

It is an arithmetic number, because the mean of its divisors is an integer number (31752).

2²⁹¹²⁴² is an apocalyptic number.

291242 is a deficient number, since it is larger than the sum of its proper divisors (216790).

291242 is a wasteful number, since it uses less digits than its factorization.

291242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373.

The product of its digits is 288, while the sum is 20.

The square root of 291242 is about 539.6684167153. The cubic root of 291242 is about 66.2854183463.

The spelling of 291242 in words is "two hundred ninety-one thousand, two hundred forty-two".