129214771 has 8 divisors (see below), whose sum is σ = 147823200. Its totient is φ = 110643648.

The previous prime is 129214769. The next prime is 129214781. The reversal of 129214771 is 177412921.

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 129214771 - 2¹ = 129214769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129214711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1456 + ... + 16141.

It is an arithmetic number, because the mean of its divisors is an integer number (18477900).

Almost surely, 2^129214771 is an apocalyptic number.

129214771 is a deficient number, since it is larger than the sum of its proper divisors (18608429).

129214771 is a wasteful number, since it uses less digits than its factorization.

129214771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18653.

The product of its digits is 7056, while the sum is 34.

The square root of 129214771 is about 11367.2675256633. The cubic root of 129214771 is about 505.5576899443.

The spelling of 129214771 in words is "one hundred twenty-nine million, two hundred fourteen thousand, seven hundred seventy-one".