2042849 has 2 divisors, whose sum is σ = 2042850. Its totient is φ = 2042848.

The previous prime is 2042819. The next prime is 2042851. The reversal of 2042849 is 9482402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1940449 + 102400 = 1393^2 + 320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2042849 is a prime.

It is a Sophie Germain prime.

Together with 2042851, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2042809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021424 + 1021425.

It is an arithmetic number, because the mean of its divisors is an integer number (1021425).

2^2042849 is an apocalyptic number.

It is an amenable number.

2042849 is a deficient number, since it is larger than the sum of its proper divisors (1).

2042849 is an equidigital number, since it uses as much as digits as its factorization.

2042849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 2042849 is about 1429.2826872246. The cubic root of 2042849 is about 126.8855272878.

The spelling of 2042849 in words is "two million, forty-two thousand, eight hundred forty-nine".