120665787 has 8 divisors (see below), whose sum is σ = 175513920. Its totient is φ = 73130760.

The previous prime is 120665773. The next prime is 120665801. The reversal of 120665787 is 787566021.

It is an interprime number because it is at equal distance from previous prime (120665773) and next prime (120665801).

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

It is not a de Polignac number, because 120665787 - 2⁴ = 120665771 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (120665737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1828237 + ... + 1828302.

It is an arithmetic number, because the mean of its divisors is an integer number (21939240).

Almost surely, 2^120665787 is an apocalyptic number.

120665787 is a deficient number, since it is larger than the sum of its proper divisors (54848133).

120665787 is a wasteful number, since it uses less digits than its factorization.

120665787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3656553.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 120665787 is about 10984.7979954117. The cubic root of 120665787 is about 494.1529396368.

The spelling of 120665787 in words is "one hundred twenty million, six hundred sixty-five thousand, seven hundred eighty-seven".