120020131987 has 8 divisors (see below), whose sum is σ = 140873050976. Its totient is φ = 100094009472.

The previous prime is 120020131949. The next prime is 120020131999. The reversal of 120020131987 is 789131020021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120020131987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120020131927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231698838 + ... + 231699355.

It is an arithmetic number, because the mean of its divisors is an integer number (17609131372).

Almost surely, 2^120020131987 is an apocalyptic number.

120020131987 is a deficient number, since it is larger than the sum of its proper divisors (20852918989).

120020131987 is an equidigital number, since it uses as much as digits as its factorization.

120020131987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463398237.

The product of its (nonzero) digits is 6048, while the sum is 34.

The spelling of 120020131987 in words is "one hundred twenty billion, twenty million, one hundred thirty-one thousand, nine hundred eighty-seven".