2017123 has 4 divisors (see below), whose sum is σ = 2104848. Its totient is φ = 1929400.

The previous prime is 2017121. The next prime is 2017133. The reversal of 2017123 is 3217102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2017123 - 2¹ = 2017121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2017097 and 2017106.

It is not an unprimeable number, because it can be changed into a prime (2017121) 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 in 3 ways as a sum of consecutive naturals, for example, 43828 + ... + 43873.

It is an arithmetic number, because the mean of its divisors is an integer number (526212).

2^2017123 is an apocalyptic number.

2017123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2017123 is a deficient number, since it is larger than the sum of its proper divisors (87725).

2017123 is an equidigital number, since it uses as much as digits as its factorization.

2017123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87724.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 2017123 is about 1420.2545546486. The cubic root of 2017123 is about 126.3506441858.

The spelling of 2017123 in words is "two million, seventeen thousand, one hundred twenty-three".