129134061 has 24 divisors (see below), whose sum is σ = 222546240. Its totient is φ = 73790136.

The previous prime is 129134059. The next prime is 129134069. The reversal of 129134061 is 160431921.

It is not a de Polignac number, because 129134061 - 2¹ = 129134059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129134069) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47481 + ... + 50126.

It is an arithmetic number, because the mean of its divisors is an integer number (9272760).

Almost surely, 2^129134061 is an apocalyptic number.

It is an amenable number.

129134061 is a deficient number, since it is larger than the sum of its proper divisors (93412179).

129134061 is an equidigital number, since it uses as much as digits as its factorization.

129134061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97630 (or 97617 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 129134061 is about 11363.7168655330. The cubic root of 129134061 is about 505.4524077093.

Adding to 129134061 its reverse (160431921), we get a palindrome (289565982).

The spelling of 129134061 in words is "one hundred twenty-nine million, one hundred thirty-four thousand, sixty-one".