208120971 has 8 divisors (see below), whose sum is σ = 278933200. Its totient is φ = 138028032.

The previous prime is 208120931. The next prime is 208120981. The reversal of 208120971 is 179021802.

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

It is not a de Polignac number, because 208120971 - 2⁹ = 208120459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208120921) 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, 179146 + ... + 180303.

It is an arithmetic number, because the mean of its divisors is an integer number (34866650).

Almost surely, 2^208120971 is an apocalyptic number.

208120971 is a deficient number, since it is larger than the sum of its proper divisors (70812229).

208120971 is a wasteful number, since it uses less digits than its factorization.

208120971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359645.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 208120971 is about 14426.3984070869. The cubic root of 208120971 is about 592.6140555591.

The spelling of 208120971 in words is "two hundred eight million, one hundred twenty thousand, nine hundred seventy-one".