129277 has 2 divisors, whose sum is σ = 129278. Its totient is φ = 129276.

The previous prime is 129263. The next prime is 129281. The reversal of 129277 is 772921.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116281 + 12996 = 341^2 + 114^2 .

It is an emirp because it is prime and its reverse (772921) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129277 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64638 + 64639.

It is an arithmetic number, because the mean of its divisors is an integer number (64639).

2¹²⁹²⁷⁷ is an apocalyptic number.

It is an amenable number.

129277 is a deficient number, since it is larger than the sum of its proper divisors (1).

129277 is an equidigital number, since it uses as much as digits as its factorization.

129277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1764, while the sum is 28.

The square root of 129277 is about 359.5511090235. The cubic root of 129277 is about 50.5638834693.

It can be divided in two parts, 1292 and 77, that added together give a square (1369 = 37²).

The spelling of 129277 in words is "one hundred twenty-nine thousand, two hundred seventy-seven".