2130245 has 12 divisors (see below), whose sum is σ = 2769156. Its totient is φ = 1572480.

The previous prime is 2130241. The next prime is 2130251. The reversal of 2130245 is 5420312.

It can be written as a sum of positive squares in 6 ways, for example, as 1181569 + 948676 = 1087^2 + 974^2 .

It is not a de Polignac number, because 2130245 - 2² = 2130241 is a prime.

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 416 + ... + 2105.

It is an arithmetic number, because the mean of its divisors is an integer number (230763).

2^2130245 is an apocalyptic number.

It is an amenable number.

2130245 is a deficient number, since it is larger than the sum of its proper divisors (638911).

2130245 is a wasteful number, since it uses less digits than its factorization.

2130245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2552 (or 2539 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 2130245 is about 1459.5358851361. The cubic root of 2130245 is about 128.6697680920.

Adding to 2130245 its reverse (5420312), we get a palindrome (7550557).

The spelling of 2130245 in words is "two million, one hundred thirty thousand, two hundred forty-five".