120845687 has 2 divisors, whose sum is σ = 120845688. Its totient is φ = 120845686.

The previous prime is 120845653. The next prime is 120845701. The reversal of 120845687 is 786548021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120845687 - 2⁶ = 120845623 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120847687) 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 as a sum of consecutive naturals, namely, 60422843 + 60422844.

It is an arithmetic number, because the mean of its divisors is an integer number (60422844).

Almost surely, 2^120845687 is an apocalyptic number.

120845687 is a deficient number, since it is larger than the sum of its proper divisors (1).

120845687 is an equidigital number, since it uses as much as digits as its factorization.

120845687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 120845687 is about 10992.9835349645. The cubic root of 120845687 is about 494.3983943852.

It can be divided in two parts, 12084 and 5687, that added together give a palindrome (17771).

The spelling of 120845687 in words is "one hundred twenty million, eight hundred forty-five thousand, six hundred eighty-seven".