18335242 has 4 divisors (see below), whose sum is σ = 27502866. Its totient is φ = 9167620.

The previous prime is 18335203. The next prime is 18335257. The reversal of 18335242 is 24253381.

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., 18326961 + 8281 = 4281^2 + 91^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18335242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4583809 + ... + 4583812.

Almost surely, 2^18335242 is an apocalyptic number.

18335242 is a deficient number, since it is larger than the sum of its proper divisors (9167624).

18335242 is an equidigital number, since it uses as much as digits as its factorization.

18335242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9167623.

The product of its digits is 5760, while the sum is 28.

The square root of 18335242 is about 4281.9670713353. The cubic root of 18335242 is about 263.6911466956.

The spelling of 18335242 in words is "eighteen million, three hundred thirty-five thousand, two hundred forty-two".