2123135 has 8 divisors (see below), whose sum is σ = 2911776. Its totient is φ = 1455840.

The previous prime is 2123129. The next prime is 2123137. The reversal of 2123135 is 5313212.

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

It is not a de Polignac number, because 2123135 - 2¹⁶ = 2057599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123137) 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, 30296 + ... + 30365.

It is an arithmetic number, because the mean of its divisors is an integer number (363972).

2^2123135 is an apocalyptic number.

2123135 is a deficient number, since it is larger than the sum of its proper divisors (788641).

2123135 is an equidigital number, since it uses as much as digits as its factorization.

2123135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60673.

The product of its digits is 180, while the sum is 17.

The square root of 2123135 is about 1457.0981435717. The cubic root of 2123135 is about 128.5264572290.

Adding to 2123135 its reverse (5313212), we get a palindrome (7436347).

The spelling of 2123135 in words is "two million, one hundred twenty-three thousand, one hundred thirty-five".