16690042 has 16 divisors (see below), whose sum is σ = 26301312. Its totient is φ = 7927920.

The previous prime is 16690033. The next prime is 16690049. The reversal of 16690042 is 24009661.

It is not an unprimeable number, because it can be changed into a prime (16690049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6067 + ... + 8377.

It is an arithmetic number, because the mean of its divisors is an integer number (1643832).

Almost surely, 2^16690042 is an apocalyptic number.

16690042 is a deficient number, since it is larger than the sum of its proper divisors (9611270).

16690042 is a wasteful number, since it uses less digits than its factorization.

16690042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2493.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 16690042 is about 4085.3447834914. The cubic root of 16690042 is about 255.5558399353. Note that the first 3 decimals are identical.

The spelling of 16690042 in words is "sixteen million, six hundred ninety thousand, forty-two".