129350026 has 8 divisors (see below), whose sum is σ = 208950084. Its totient is φ = 59700000.

The previous prime is 129350009. The next prime is 129350027. The reversal of 129350026 is 620053921.

It can be written as a sum of positive squares in 2 ways, for example, as 106069401 + 23280625 = 10299^2 + 4825^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 129349976 and 129350003.

It is not an unprimeable number, because it can be changed into a prime (129350027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2487475 + ... + 2487526.

Almost surely, 2^129350026 is an apocalyptic number.

129350026 is a deficient number, since it is larger than the sum of its proper divisors (79600058).

129350026 is a wasteful number, since it uses less digits than its factorization.

129350026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4975016.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 129350026 is about 11373.2152885629. The cubic root of 129350026 is about 505.7340252042.

The spelling of 129350026 in words is "one hundred twenty-nine million, three hundred fifty thousand, twenty-six".