120786987 has 4 divisors (see below), whose sum is σ = 161049320. Its totient is φ = 80524656.

The previous prime is 120786979. The next prime is 120787027. The reversal of 120786987 is 789687021.

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

It is not a de Polignac number, because 120786987 - 2³ = 120786979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120786917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20131162 + ... + 20131167.

It is an arithmetic number, because the mean of its divisors is an integer number (40262330).

Almost surely, 2^120786987 is an apocalyptic number.

120786987 is a deficient number, since it is larger than the sum of its proper divisors (40262333).

120786987 is an equidigital number, since it uses as much as digits as its factorization.

120786987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40262332.

The product of its (nonzero) digits is 338688, while the sum is 48.

The square root of 120786987 is about 10990.3133258338. The cubic root of 120786987 is about 494.3183311611.

The spelling of 120786987 in words is "one hundred twenty million, seven hundred eighty-six thousand, nine hundred eighty-seven".