18142145 has 16 divisors (see below), whose sum is σ = 26345088. Its totient is φ = 11708160.

The previous prime is 18142129. The next prime is 18142151. The reversal of 18142145 is 54124181.

It is not a de Polignac number, because 18142145 - 2⁴ = 18142129 is a prime.

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 in 15 ways as a sum of consecutive naturals, for example, 14651 + ... + 15840.

It is an arithmetic number, because the mean of its divisors is an integer number (1646568).

Almost surely, 2^18142145 is an apocalyptic number.

It is an amenable number.

18142145 is a deficient number, since it is larger than the sum of its proper divisors (8202943).

18142145 is a wasteful number, since it uses less digits than its factorization.

18142145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30520.

The product of its digits is 1280, while the sum is 26.

The square root of 18142145 is about 4259.3596936629. The cubic root of 18142145 is about 262.7621930528.

The spelling of 18142145 in words is "eighteen million, one hundred forty-two thousand, one hundred forty-five".