2130243 has 4 divisors (see below), whose sum is σ = 2840328. Its totient is φ = 1420160.

The previous prime is 2130241. The next prime is 2130251. The reversal of 2130243 is 3420312.

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 2130243 - 2¹ = 2130241 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2130241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355038 + ... + 355043.

It is an arithmetic number, because the mean of its divisors is an integer number (710082).

2^2130243 is an apocalyptic number.

2130243 is a deficient number, since it is larger than the sum of its proper divisors (710085).

2130243 is an equidigital number, since it uses as much as digits as its factorization.

2130243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710084.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 2130243 is about 1459.5351999866. The cubic root of 2130243 is about 128.6697278244.

Adding to 2130243 its reverse (3420312), we get a palindrome (5550555).

The spelling of 2130243 in words is "two million, one hundred thirty thousand, two hundred forty-three".