2108429 has 2 divisors, whose sum is σ = 2108430. Its totient is φ = 2108428.

The previous prime is 2108401. The next prime is 2108437. The reversal of 2108429 is 9248012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2102500 + 5929 = 1450^2 + 77^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2108429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2108398 and 2108407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2108929) 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, 1054214 + 1054215.

It is an arithmetic number, because the mean of its divisors is an integer number (1054215).

2^2108429 is an apocalyptic number.

It is an amenable number.

2108429 is a deficient number, since it is larger than the sum of its proper divisors (1).

2108429 is an equidigital number, since it uses as much as digits as its factorization.

2108429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 2108429 is about 1452.0430434391. The cubic root of 2108429 is about 128.2290211370.

The spelling of 2108429 in words is "two million, one hundred eight thousand, four hundred twenty-nine".