199242 has 12 divisors (see below), whose sum is σ = 431730. Its totient is φ = 66408.

The previous prime is 199211. The next prime is 199247. The reversal of 199242 is 242991.

It can be written as a sum of positive squares in only one way, i.e., 194481 + 4761 = 441^2 + 69^2 .

It is not an unprimeable number, because it can be changed into a prime (199247) by changing a digit.

199242 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 5 ways as a sum of consecutive naturals, for example, 5517 + ... + 5552.

2¹⁹⁹²⁴² is an apocalyptic number.

199242 is an abundant number, since it is smaller than the sum of its proper divisors (232488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199242 is a wasteful number, since it uses less digits than its factorization.

199242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11077 (or 11074 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 199242 is about 446.3653212336. The cubic root of 199242 is about 58.4063810504.

It can be divided in two parts, 199 and 242, that added together give a square (441 = 21²).

The spelling of 199242 in words is "one hundred ninety-nine thousand, two hundred forty-two".