128000971 has 8 divisors (see below), whose sum is σ = 146389760. Its totient is φ = 109637928.

The previous prime is 128000963. The next prime is 128000993. The reversal of 128000971 is 179000821.

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 128000971 - 2³ = 128000963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128000071) 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, 5770 + ... + 17008.

It is an arithmetic number, because the mean of its divisors is an integer number (18298720).

Almost surely, 2^128000971 is an apocalyptic number.

128000971 is a deficient number, since it is larger than the sum of its proper divisors (18388789).

128000971 is a wasteful number, since it uses less digits than its factorization.

128000971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12873.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 128000971 is about 11313.7514114462. The cubic root of 128000971 is about 503.9696943124.

The spelling of 128000971 in words is "one hundred twenty-eight million, nine hundred seventy-one", and thus it is an aban number.