120001985 has 8 divisors (see below), whose sum is σ = 144325800. Its totient is φ = 95785984.

The previous prime is 120001939. The next prime is 120002021. The reversal of 120001985 is 589100021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20939776 + 99062209 = 4576^2 + 9953^2 .

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 120001985 - 2¹⁴ = 119985601 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24482 + ... + 28971.

It is an arithmetic number, because the mean of its divisors is an integer number (18040725).

Almost surely, 2^120001985 is an apocalyptic number.

It is an amenable number.

120001985 is a deficient number, since it is larger than the sum of its proper divisors (24323815).

120001985 is an equidigital number, since it uses as much as digits as its factorization.

120001985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53907.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 120001985 is about 10954.5417521684. The cubic root of 120001985 is about 493.2451345350.

The spelling of 120001985 in words is "one hundred twenty million, one thousand, nine hundred eighty-five".