129271294 has 8 divisors (see below), whose sum is σ = 194990760. Its totient is φ = 64274376.

The previous prime is 129271277. The next prime is 129271321. The reversal of 129271294 is 492172921.

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

It is a super-2 number, since 2×129271294² = 33422134904868872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 180189 + ... + 180904.

It is an arithmetic number, because the mean of its divisors is an integer number (24373845).

Almost surely, 2^129271294 is an apocalyptic number.

129271294 is a deficient number, since it is larger than the sum of its proper divisors (65719466).

129271294 is a wasteful number, since it uses less digits than its factorization.

129271294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361274.

The product of its digits is 18144, while the sum is 37.

The square root of 129271294 is about 11369.7534713819. The cubic root of 129271294 is about 505.6313953250.

The spelling of 129271294 in words is "one hundred twenty-nine million, two hundred seventy-one thousand, two hundred ninety-four".