2123130 has 64 divisors (see below), whose sum is σ = 5660928. Its totient is φ = 506880.

The previous prime is 2123129. The next prime is 2123137. The reversal of 2123130 is 313212.

It is a happy 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 31 ways as a sum of consecutive naturals, for example, 11640 + ... + 11820.

It is an arithmetic number, because the mean of its divisors is an integer number (88452).

2^2123130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2123130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2830464).

2123130 is an abundant number, since it is smaller than the sum of its proper divisors (3537798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2123130 is a wasteful number, since it uses less digits than its factorization.

2123130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231.

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

The square root of 2123130 is about 1457.0964278317. The cubic root of 2123130 is about 128.5263563353.

Adding to 2123130 its reverse (313212), we get a palindrome (2436342).

The spelling of 2123130 in words is "two million, one hundred twenty-three thousand, one hundred thirty".