18559142 has 48 divisors (see below), whose sum is σ = 34473600. Its totient is φ = 7459200.

The previous prime is 18559139. The next prime is 18559147. The reversal of 18559142 is 24195581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18559147) 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 23 ways as a sum of consecutive naturals, for example, 124484 + ... + 124632.

It is an arithmetic number, because the mean of its divisors is an integer number (718200).

Almost surely, 2^18559142 is an apocalyptic number.

18559142 is a deficient number, since it is larger than the sum of its proper divisors (15914458).

18559142 is a wasteful number, since it uses less digits than its factorization.

18559142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237 (or 230 counting only the distinct ones).

The product of its digits is 14400, while the sum is 35.

The square root of 18559142 is about 4308.0322654316. The cubic root of 18559142 is about 264.7601579782.

The spelling of 18559142 in words is "eighteen million, five hundred fifty-nine thousand, one hundred forty-two".