2100239 has 2 divisors, whose sum is σ = 2100240. Its totient is φ = 2100238.

The previous prime is 2100229. The next prime is 2100247. The reversal of 2100239 is 9320012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2100239 - 2²⁰ = 1051663 is a prime.

It is a super-2 number, since 2×2100239² = 8822007714242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2100229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050119 + 1050120.

It is an arithmetic number, because the mean of its divisors is an integer number (1050120).

2^2100239 is an apocalyptic number.

2100239 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100239 is an equidigital number, since it uses as much as digits as its factorization.

2100239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 2100239 is about 1449.2201351072. The cubic root of 2100239 is about 128.0627743846.

The spelling of 2100239 in words is "two million, one hundred thousand, two hundred thirty-nine".