129764 has 6 divisors (see below), whose sum is σ = 227094. Its totient is φ = 64880.

The previous prime is 129763. The next prime is 129769. The reversal of 129764 is 467921.

It can be written as a sum of positive squares in only one way, i.e., 128164 + 1600 = 358^2 + 40^2 .

It is not an unprimeable number, because it can be changed into a prime (129763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16217 + ... + 16224.

It is an arithmetic number, because the mean of its divisors is an integer number (37849).

2¹²⁹⁷⁶⁴ is an apocalyptic number.

It is an amenable number.

129764 is a deficient number, since it is larger than the sum of its proper divisors (97330).

129764 is a wasteful number, since it uses less digits than its factorization.

129764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32445 (or 32443 counting only the distinct ones).

The product of its digits is 3024, while the sum is 29.

The square root of 129764 is about 360.2277057640. The cubic root of 129764 is about 50.6272970558.

The spelling of 129764 in words is "one hundred twenty-nine thousand, seven hundred sixty-four".