16390123 has 2 divisors, whose sum is σ = 16390124. Its totient is φ = 16390122.

The previous prime is 16390117. The next prime is 16390163. The reversal of 16390123 is 32109361.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16390123 is a prime.

It is a super-2 number, since 2×16390123² = 537272263910258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16390163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8195061 + 8195062.

It is an arithmetic number, because the mean of its divisors is an integer number (8195062).

Almost surely, 2^16390123 is an apocalyptic number.

16390123 is a deficient number, since it is larger than the sum of its proper divisors (1).

16390123 is an equidigital number, since it uses as much as digits as its factorization.

16390123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 16390123 is about 4048.4716869456. The cubic root of 16390123 is about 254.0158038816.

Adding to 16390123 its reverse (32109361), we get a palindrome (48499484).

The spelling of 16390123 in words is "sixteen million, three hundred ninety thousand, one hundred twenty-three".