2103123 has 16 divisors (see below), whose sum is σ = 3094272. Its totient is φ = 1260000.

The previous prime is 2103119. The next prime is 2103139. The reversal of 2103123 is 3213012.

It is a happy number.

It is not a de Polignac number, because 2103123 - 2² = 2103119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2103099 and 2103108.

It is not an unprimeable number, because it can be changed into a prime (2103103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3018 + ... + 3648.

It is an arithmetic number, because the mean of its divisors is an integer number (193392).

2^2103123 is an apocalyptic number.

2103123 is a deficient number, since it is larger than the sum of its proper divisors (991149).

2103123 is a wasteful number, since it uses less digits than its factorization.

2103123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 2103123 is about 1450.2148116745. The cubic root of 2103123 is about 128.1213651953.

Adding to 2103123 its reverse (3213012), we get a palindrome (5316135).

It can be divided in two parts, 210 and 3123, that added together give a palindrome (3333).

The spelling of 2103123 in words is "two million, one hundred three thousand, one hundred twenty-three".