2042389 has 2 divisors, whose sum is σ = 2042390. Its totient is φ = 2042388.

The previous prime is 2042357. The next prime is 2042393. The reversal of 2042389 is 9832402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1988100 + 54289 = 1410^2 + 233^2 .

It is a cyclic number.

It is not a de Polignac number, because 2042389 - 2⁵ = 2042357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2042399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021194 + 1021195.

It is an arithmetic number, because the mean of its divisors is an integer number (1021195).

2^2042389 is an apocalyptic number.

It is an amenable number.

2042389 is a deficient number, since it is larger than the sum of its proper divisors (1).

2042389 is an equidigital number, since it uses as much as digits as its factorization.

2042389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 2042389 is about 1429.1217582837. The cubic root of 2042389 is about 126.8760027261.

The spelling of 2042389 in words is "two million, forty-two thousand, three hundred eighty-nine".