20759129 has 2 divisors, whose sum is σ = 20759130. Its totient is φ = 20759128.

The previous prime is 20759107. The next prime is 20759131. The reversal of 20759129 is 92195702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17205904 + 3553225 = 4148^2 + 1885^2 .

It is a cyclic number.

It is not a de Polignac number, because 20759129 - 2¹⁶ = 20693593 is a prime.

Together with 20759131, 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 (20759149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10379564 + 10379565.

It is an arithmetic number, because the mean of its divisors is an integer number (10379565).

Almost surely, 2^20759129 is an apocalyptic number.

It is an amenable number.

20759129 is a deficient number, since it is larger than the sum of its proper divisors (1).

20759129 is an equidigital number, since it uses as much as digits as its factorization.

20759129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 20759129 is about 4556.2187173137. The cubic root of 20759129 is about 274.8335256895.

The spelling of 20759129 in words is "twenty million, seven hundred fifty-nine thousand, one hundred twenty-nine".