120655019 has 4 divisors (see below), whose sum is σ = 121782744. Its totient is φ = 119527296.

The previous prime is 120655009. The next prime is 120655021. The reversal of 120655019 is 910556021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120655019 is a prime.

It is a super-2 number, since 2×120655019² = 29115267219780722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120654982 and 120655000.

It is not an unprimeable number, because it can be changed into a prime (120655009) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 563702 + ... + 563915.

It is an arithmetic number, because the mean of its divisors is an integer number (30445686).

Almost surely, 2^120655019 is an apocalyptic number.

120655019 is a deficient number, since it is larger than the sum of its proper divisors (1127725).

120655019 is a wasteful number, since it uses less digits than its factorization.

120655019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127724.

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 120655019 is about 10984.3078525686. The cubic root of 120655019 is about 494.1382400901.

The spelling of 120655019 in words is "one hundred twenty million, six hundred fifty-five thousand, nineteen".