2042813 has 2 divisors, whose sum is σ = 2042814. Its totient is φ = 2042812.

The previous prime is 2042809. The next prime is 2042819. The reversal of 2042813 is 3182402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1951609 + 91204 = 1397^2 + 302^2 .

It is a cyclic number.

It is not a de Polignac number, because 2042813 - 2² = 2042809 is a prime.

It is a Chen prime.

It is equal to p₁₅₁₉₀₄ and since 2042813 and 151904 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2042819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021406 + 1021407.

It is an arithmetic number, because the mean of its divisors is an integer number (1021407).

2^2042813 is an apocalyptic number.

It is an amenable number.

2042813 is a deficient number, since it is larger than the sum of its proper divisors (1).

2042813 is an equidigital number, since it uses as much as digits as its factorization.

2042813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2042813 is about 1429.2700934393. The cubic root of 2042813 is about 126.8847819389.

The spelling of 2042813 in words is "two million, forty-two thousand, eight hundred thirteen".