1984123 has 2 divisors, whose sum is σ = 1984124. Its totient is φ = 1984122.

The previous prime is 1984117. The next prime is 1984133. The reversal of 1984123 is 3214891.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (3214891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1984123 - 2⁵ = 1984091 is a prime.

It is an Ulam number.

It is a plaindrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 1984091 and 1984100.

It is not a weakly prime, because it can be changed into another prime (1984133) 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 as a sum of consecutive naturals, namely, 992061 + 992062.

It is an arithmetic number, because the mean of its divisors is an integer number (992062).

2^1984123 is an apocalyptic number.

1984123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1984123 is an equidigital number, since it uses as much as digits as its factorization.

1984123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 28.

The square root of 1984123 is about 1408.5890103220. The cubic root of 1984123 is about 125.6578227478.

The spelling of 1984123 in words is "one million, nine hundred eighty-four thousand, one hundred twenty-three".