129275319 has 8 divisors (see below), whose sum is σ = 172488960. Its totient is φ = 86122616.

The previous prime is 129275317. The next prime is 129275323. The reversal of 129275319 is 913572921.

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

It is a cyclic number.

It is not a de Polignac number, because 129275319 - 2¹ = 129275317 is a prime.

It is a super-2 number, since 2×129275319² = 33424216205103522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129275317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10029 + ... + 18950.

It is an arithmetic number, because the mean of its divisors is an integer number (21561120).

Almost surely, 2^129275319 is an apocalyptic number.

129275319 is a deficient number, since it is larger than the sum of its proper divisors (43213641).

129275319 is a wasteful number, since it uses less digits than its factorization.

129275319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30469.

The product of its digits is 34020, while the sum is 39.

The square root of 129275319 is about 11369.9304747215. The cubic root of 129275319 is about 505.6366430620.

The spelling of 129275319 in words is "one hundred twenty-nine million, two hundred seventy-five thousand, three hundred nineteen".