129137759 has 2 divisors, whose sum is σ = 129137760. Its totient is φ = 129137758.

The previous prime is 129137747. The next prime is 129137761. The reversal of 129137759 is 957731921.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129137759 is a prime.

Together with 129137761, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129137719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64568879 + 64568880.

It is an arithmetic number, because the mean of its divisors is an integer number (64568880).

Almost surely, 2^129137759 is an apocalyptic number.

129137759 is a deficient number, since it is larger than the sum of its proper divisors (1).

129137759 is an equidigital number, since it uses as much as digits as its factorization.

129137759 is an evil number, because the sum of its binary digits is even.

The product of its digits is 119070, while the sum is 44.

The square root of 129137759 is about 11363.8795752155. The cubic root of 129137759 is about 505.4572325277.

The spelling of 129137759 in words is "one hundred twenty-nine million, one hundred thirty-seven thousand, seven hundred fifty-nine".