120721985 has 8 divisors (see below), whose sum is σ = 145070016. Its totient is φ = 96441840.

The previous prime is 120721973. The next prime is 120722011. The reversal of 120721985 is 589127021.

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

It is not a de Polignac number, because 120721985 - 2⁶ = 120721921 is a prime.

It is a super-3 number, since 3×120721985³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12971 + ... + 20240.

It is an arithmetic number, because the mean of its divisors is an integer number (18133752).

Almost surely, 2^120721985 is an apocalyptic number.

It is an amenable number.

120721985 is a deficient number, since it is larger than the sum of its proper divisors (24348031).

120721985 is an equidigital number, since it uses as much as digits as its factorization.

120721985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33943.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 120721985 is about 10987.3556873344. The cubic root of 120721985 is about 494.2296421209.

The spelling of 120721985 in words is "one hundred twenty million, seven hundred twenty-one thousand, nine hundred eighty-five".