2120249 has 2 divisors, whose sum is σ = 2120250. Its totient is φ = 2120248.

The previous prime is 2120243. The next prime is 2120263. The reversal of 2120249 is 9420212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1428025 + 692224 = 1195^2 + 832^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120249 - 2¹⁶ = 2054713 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2120249.

It is not a weakly prime, because it can be changed into another prime (2120243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060124 + 1060125.

It is an arithmetic number, because the mean of its divisors is an integer number (1060125).

2^2120249 is an apocalyptic number.

It is an amenable number.

2120249 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120249 is an equidigital number, since it uses as much as digits as its factorization.

2120249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 2120249 is about 1456.1074822966. The cubic root of 2120249 is about 128.4681950285.

The spelling of 2120249 in words is "two million, one hundred twenty thousand, two hundred forty-nine".