129043319076 has 135 divisors (see below), whose sum is σ = 392559107787. Its totient is φ = 36856587600.

The previous prime is 129043319071. The next prime is 129043319099. The reversal of 129043319076 is 670913340921.

The square root of 129043319076 is 359226.

It is a perfect power (a square), and thus also a powerful number.

129043319076 is a `hidden beast` number, since 1 + 29 + 0 + 433 + 190 + 7 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (129043319071) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 45261051 + ... + 45263901.

Almost surely, 2^129043319076 is an apocalyptic number.

129043319076 is the 359226-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129043319076

129043319076 is an abundant number, since it is smaller than the sum of its proper divisors (263515788711).

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

129043319076 is an frugal number, since it uses more digits than its factorization.

129043319076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5732 (or 2863 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

Adding to 129043319076 its reverse (670913340921), we get a palindrome (799956659997).

The spelling of 129043319076 in words is "one hundred twenty-nine billion, forty-three million, three hundred nineteen thousand, seventy-six".