2133123 has 4 divisors (see below), whose sum is σ = 2844168. Its totient is φ = 1422080.

The previous prime is 2133121. The next prime is 2133137. The reversal of 2133123 is 3213312.

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 2133123 - 2¹ = 2133121 is a prime.

It is a D-number.

2133123 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2133121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355518 + ... + 355523.

It is an arithmetic number, because the mean of its divisors is an integer number (711042).

2^2133123 is an apocalyptic number.

2133123 is a deficient number, since it is larger than the sum of its proper divisors (711045).

2133123 is an equidigital number, since it uses as much as digits as its factorization.

2133123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711044.

The product of its digits is 108, while the sum is 15.

The square root of 2133123 is about 1460.5214822111. The cubic root of 2133123 is about 128.7276870875.

Adding to 2133123 its reverse (3213312), we get a palindrome (5346435).

It can be divided in two parts, 213312 and 3, that multiplied together give a palindrome (639936).

The spelling of 2133123 in words is "two million, one hundred thirty-three thousand, one hundred twenty-three".