18456142 has 16 divisors (see below), whose sum is σ = 28108080. Its totient is φ = 9088128.

The previous prime is 18456121. The next prime is 18456157. The reversal of 18456142 is 24165481.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54598 + ... + 54934.

It is an arithmetic number, because the mean of its divisors is an integer number (1756755).

Almost surely, 2^18456142 is an apocalyptic number.

18456142 is a deficient number, since it is larger than the sum of its proper divisors (9651938).

18456142 is a wasteful number, since it uses less digits than its factorization.

18456142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675.

The product of its digits is 7680, while the sum is 31.

The square root of 18456142 is about 4296.0612193031. The cubic root of 18456142 is about 264.2694581952.

The spelling of 18456142 in words is "eighteen million, four hundred fifty-six thousand, one hundred forty-two".