2106239 has 2 divisors, whose sum is σ = 2106240. Its totient is φ = 2106238.

The previous prime is 2106229. The next prime is 2106257. The reversal of 2106239 is 9326012.

2106239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2106239 - 2¹² = 2102143 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2106229) 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, 1053119 + 1053120.

It is an arithmetic number, because the mean of its divisors is an integer number (1053120).

2^2106239 is an apocalyptic number.

2106239 is a deficient number, since it is larger than the sum of its proper divisors (1).

2106239 is an equidigital number, since it uses as much as digits as its factorization.

2106239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 2106239 is about 1451.2887376398. The cubic root of 2106239 is about 128.1846091062.

The spelling of 2106239 in words is "two million, one hundred six thousand, two hundred thirty-nine".