120857873 has 8 divisors (see below), whose sum is σ = 127153320. Its totient is φ = 114721920.

The previous prime is 120857839. The next prime is 120857903. The reversal of 120857873 is 378758021.

It can be written as a sum of positive squares in 4 ways, for example, as 14190289 + 106667584 = 3767^2 + 10328^2 .

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 120857873 - 2²⁰ = 119809297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120857873.

It is not an unprimeable number, because it can be changed into a prime (120857813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38318 + ... + 41351.

It is an arithmetic number, because the mean of its divisors is an integer number (15894165).

Almost surely, 2^120857873 is an apocalyptic number.

It is an amenable number.

120857873 is a deficient number, since it is larger than the sum of its proper divisors (6295447).

120857873 is an equidigital number, since it uses as much as digits as its factorization.

120857873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79747.

The product of its (nonzero) digits is 94080, while the sum is 41.

The square root of 120857873 is about 10993.5377836254. The cubic root of 120857873 is about 494.4150120968.

The spelling of 120857873 in words is "one hundred twenty million, eight hundred fifty-seven thousand, eight hundred seventy-three".