16423123 has 4 divisors (see below), whose sum is σ = 16432840. Its totient is φ = 16413408.

The previous prime is 16423117. The next prime is 16423129. The reversal of 16423123 is 32132461.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 32132461 = 31 ⋅1036531.

It is an interprime number because it is at equal distance from previous prime (16423117) and next prime (16423129).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16423123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16423094 and 16423103.

It is not an unprimeable number, because it can be changed into a prime (16423129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1590 + ... + 5947.

It is an arithmetic number, because the mean of its divisors is an integer number (4108210).

Almost surely, 2^16423123 is an apocalyptic number.

16423123 is a deficient number, since it is larger than the sum of its proper divisors (9717).

16423123 is an equidigital number, since it uses as much as digits as its factorization.

16423123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9716.

The product of its digits is 864, while the sum is 22.

The square root of 16423123 is about 4052.5452495931. The cubic root of 16423123 is about 254.1861687207.

Adding to 16423123 its reverse (32132461), we get a palindrome (48555584).

The spelling of 16423123 in words is "sixteen million, four hundred twenty-three thousand, one hundred twenty-three".