999242 has 4 divisors (see below), whose sum is σ = 1498866. Its totient is φ = 499620.

The previous prime is 999239. The next prime is 999269. The reversal of 999242 is 242999.

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., 982081 + 17161 = 991^2 + 131^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249809 + ... + 249812.

2⁹⁹⁹²⁴² is an apocalyptic number.

999242 is a deficient number, since it is larger than the sum of its proper divisors (499624).

999242 is a wasteful number, since it uses less digits than its factorization.

999242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499623.

The product of its digits is 11664, while the sum is 35.

The square root of 999242 is about 999.6209281523. The cubic root of 999242 is about 99.9747269466.

The spelling of 999242 in words is "nine hundred ninety-nine thousand, two hundred forty-two".