129743604 has 18 divisors (see below), whose sum is σ = 327963090. Its totient is φ = 43247856.

The previous prime is 129743597. The next prime is 129743617. The reversal of 129743604 is 406347921.

129743604 is a `hidden beast` number, since 1 + 2 + 9 + 7 + 43 + 604 = 666.

It can be written as a sum of positive squares in only one way, i.e., 118853604 + 10890000 = 10902^2 + 3300^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 3603989 = 129743604 / (1 + 2 + 9 + 7 + 4 + 3 + 6 + 0 + 4).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1801959 + ... + 1802030.

Almost surely, 2^129743604 is an apocalyptic number.

It is an amenable number.

129743604 is an abundant number, since it is smaller than the sum of its proper divisors (198219486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129743604 is a wasteful number, since it uses less digits than its factorization.

129743604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3603999 (or 3603994 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 129743604 is about 11390.5049931950. The cubic root of 129743604 is about 506.2464442366.

The spelling of 129743604 in words is "one hundred twenty-nine million, seven hundred forty-three thousand, six hundred four".