120929871 has 4 divisors (see below), whose sum is σ = 161239832. Its totient is φ = 80619912.

The previous prime is 120929867. The next prime is 120929909. The reversal of 120929871 is 178929021.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 120929871 - 2² = 120929867 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120929821) 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 3 ways as a sum of consecutive naturals, for example, 20154976 + ... + 20154981.

It is an arithmetic number, because the mean of its divisors is an integer number (40309958).

Almost surely, 2^120929871 is an apocalyptic number.

120929871 is a deficient number, since it is larger than the sum of its proper divisors (40309961).

120929871 is an equidigital number, since it uses as much as digits as its factorization.

120929871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40309960.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 120929871 is about 10996.8118561700. The cubic root of 120929871 is about 494.5131709917.

The spelling of 120929871 in words is "one hundred twenty million, nine hundred twenty-nine thousand, eight hundred seventy-one".