129690134 has 16 divisors (see below), whose sum is σ = 227749536. Its totient is φ = 54225600.

The previous prime is 129690133. The next prime is 129690149. The reversal of 129690134 is 431096921.

It is a junction number, because it is equal to n+sod(n) for n = 129690094 and 129690103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129690133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112397 + ... + 113544.

It is an arithmetic number, because the mean of its divisors is an integer number (14234346).

Almost surely, 2^129690134 is an apocalyptic number.

129690134 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

129690134 is a deficient number, since it is larger than the sum of its proper divisors (98059402).

129690134 is a wasteful number, since it uses less digits than its factorization.

129690134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225991.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 129690134 is about 11388.1576209675. The cubic root of 129690134 is about 506.1768898335.

It can be divided in two parts, 129690 and 134, that multiplied together give a triangular number (17378460 = T₅₈₉₅).

The spelling of 129690134 in words is "one hundred twenty-nine million, six hundred ninety thousand, one hundred thirty-four".