129741764 has 6 divisors (see below), whose sum is σ = 227048094. Its totient is φ = 64870880.

The previous prime is 129741763. The next prime is 129741811. The reversal of 129741764 is 467147921.

It can be written as a sum of positive squares in only one way, i.e., 91202500 + 38539264 = 9550^2 + 6208^2 .

It is not an unprimeable number, because it can be changed into a prime (129741763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16217717 + ... + 16217724.

It is an arithmetic number, because the mean of its divisors is an integer number (37841349).

Almost surely, 2^129741764 is an apocalyptic number.

It is an amenable number.

129741764 is a deficient number, since it is larger than the sum of its proper divisors (97306330).

129741764 is a wasteful number, since it uses less digits than its factorization.

129741764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32435445 (or 32435443 counting only the distinct ones).

The product of its digits is 84672, while the sum is 41.

The square root of 129741764 is about 11390.4242238821. The cubic root of 129741764 is about 506.2440510605.

The spelling of 129741764 in words is "one hundred twenty-nine million, seven hundred forty-one thousand, seven hundred sixty-four".