26117129 has 2 divisors, whose sum is σ = 26117130. Its totient is φ = 26117128.

The previous prime is 26117059. The next prime is 26117131. The reversal of 26117129 is 92171162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25270729 + 846400 = 5027^2 + 920^2 .

It is a cyclic number.

It is not a de Polignac number, because 26117129 - 2⁸ = 26116873 is a prime.

Together with 26117131, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26117629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13058564 + 13058565.

It is an arithmetic number, because the mean of its divisors is an integer number (13058565).

Almost surely, 2^26117129 is an apocalyptic number.

It is an amenable number.

26117129 is a deficient number, since it is larger than the sum of its proper divisors (1).

26117129 is an equidigital number, since it uses as much as digits as its factorization.

26117129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 29.

The square root of 26117129 is about 5110.4920506738. The cubic root of 26117129 is about 296.6938048369.

The spelling of 26117129 in words is "twenty-six million, one hundred seventeen thousand, one hundred twenty-nine".