2115243 has 24 divisors (see below), whose sum is σ = 3341520. Its totient is φ = 1281600.

The previous prime is 2115233. The next prime is 2115277. The reversal of 2115243 is 3425112.

It is not a de Polignac number, because 2115243 - 2⁴ = 2115227 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2115203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11728 + ... + 11906.

It is an arithmetic number, because the mean of its divisors is an integer number (139230).

2^2115243 is an apocalyptic number.

2115243 is a deficient number, since it is larger than the sum of its proper divisors (1226277).

2115243 is a wasteful number, since it uses less digits than its factorization.

2115243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299 (or 296 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 2115243 is about 1454.3874999463. The cubic root of 2115243 is about 128.3670090219.

The spelling of 2115243 in words is "two million, one hundred fifteen thousand, two hundred forty-three".