16642323 has 6 divisors (see below), whose sum is σ = 24038924. Its totient is φ = 11094876.

The previous prime is 16642313. The next prime is 16642343. The reversal of 16642323 is 32324661.

16642323 is a `hidden beast` number, since 16 + 642 + 3 + 2 + 3 = 666.

It is not a de Polignac number, because 16642323 - 2¹⁸ = 16380179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16642313) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 924565 + ... + 924582.

Almost surely, 2^16642323 is an apocalyptic number.

16642323 is a deficient number, since it is larger than the sum of its proper divisors (7396601).

16642323 is a wasteful number, since it uses less digits than its factorization.

16642323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849153 (or 1849150 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 16642323 is about 4079.5003370511. The cubic root of 16642323 is about 255.3120516560.

Adding to 16642323 its reverse (32324661), we get a palindrome (48966984).

The spelling of 16642323 in words is "sixteen million, six hundred forty-two thousand, three hundred twenty-three".