2102123 has 8 divisors (see below), whose sum is σ = 2192400. Its totient is φ = 2013088.

The previous prime is 2102117. The next prime is 2102137. The reversal of 2102123 is 3212012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2102123 - 2⁸ = 2101867 is a prime.

It is a super-2 number, since 2×2102123² = 8837842214258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2102143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4808 + ... + 5226.

It is an arithmetic number, because the mean of its divisors is an integer number (274050).

2^2102123 is an apocalyptic number.

2102123 is a deficient number, since it is larger than the sum of its proper divisors (90277).

2102123 is a wasteful number, since it uses less digits than its factorization.

2102123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 2102123 is about 1449.8699941719. The cubic root of 2102123 is about 128.1010554501.

Adding to 2102123 its reverse (3212012), we get a palindrome (5314135).

The spelling of 2102123 in words is "two million, one hundred two thousand, one hundred twenty-three".