18122942 has 8 divisors (see below), whose sum is σ = 28366416. Its totient is φ = 8667472.

The previous prime is 18122927. The next prime is 18122947. The reversal of 18122942 is 24922181.

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

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18122947) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 196943 + ... + 197034.

It is an arithmetic number, because the mean of its divisors is an integer number (3545802).

Almost surely, 2^18122942 is an apocalyptic number.

18122942 is a deficient number, since it is larger than the sum of its proper divisors (10243474).

18122942 is a wasteful number, since it uses less digits than its factorization.

18122942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394002.

The product of its digits is 2304, while the sum is 29.

The square root of 18122942 is about 4257.1048847779. The cubic root of 18122942 is about 262.6694512862.

The spelling of 18122942 in words is "eighteen million, one hundred twenty-two thousand, nine hundred forty-two".