16518042 has 12 divisors (see below), whose sum is σ = 35789130. Its totient is φ = 5506008.

The previous prime is 16518037. The next prime is 16518043. The reversal of 16518042 is 24081561.

16518042 is a `hidden beast` number, since 1 + 651 + 8 + 0 + 4 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 13024881 + 3493161 = 3609^2 + 1869^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16517997 and 16518015.

It is not an unprimeable number, because it can be changed into a prime (16518043) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 458817 + ... + 458852.

Almost surely, 2^16518042 is an apocalyptic number.

16518042 is an abundant number, since it is smaller than the sum of its proper divisors (19271088).

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

16518042 is a wasteful number, since it uses less digits than its factorization.

16518042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917677 (or 917674 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 16518042 is about 4064.2394122394. The cubic root of 16518042 is about 254.6749260256.

The spelling of 16518042 in words is "sixteen million, five hundred eighteen thousand, forty-two".