120687218 has 4 divisors (see below), whose sum is σ = 181030830. Its totient is φ = 60343608.

The previous prime is 120687179. The next prime is 120687227. The reversal of 120687218 is 812786021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 812786021 = 61 ⋅13324361.

It can be written as a sum of positive squares in only one way, i.e., 120187369 + 499849 = 10963^2 + 707^2 .

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 as a sum of consecutive naturals, namely, 30171803 + ... + 30171806.

Almost surely, 2^120687218 is an apocalyptic number.

120687218 is a deficient number, since it is larger than the sum of its proper divisors (60343612).

120687218 is an equidigital number, since it uses as much as digits as its factorization.

120687218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60343611.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 120687218 is about 10985.7734365861. The cubic root of 120687218 is about 494.1821927914.

The spelling of 120687218 in words is "one hundred twenty million, six hundred eighty-seven thousand, two hundred eighteen".