18126642 has 8 divisors (see below), whose sum is σ = 36253296. Its totient is φ = 6042212.

The previous prime is 18126637. The next prime is 18126643. The reversal of 18126642 is 24662181.

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

18126642 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (18126643) 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, 1510548 + ... + 1510559.

It is an arithmetic number, because the mean of its divisors is an integer number (4531662).

Almost surely, 2^18126642 is an apocalyptic number.

18126642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18126642 is a wasteful number, since it uses less digits than its factorization.

18126642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3021112.

The product of its digits is 4608, while the sum is 30.

The square root of 18126642 is about 4257.5394302343. The cubic root of 18126642 is about 262.6873256989.

The spelling of 18126642 in words is "eighteen million, one hundred twenty-six thousand, six hundred forty-two".