120666019 has 2 divisors, whose sum is σ = 120666020. Its totient is φ = 120666018.

The previous prime is 120665989. The next prime is 120666053. The reversal of 120666019 is 910666021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120666019 - 2⁷ = 120665891 is a prime.

It is a super-2 number, since 2×120666019² = 29120576282616722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (120666059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60333009 + 60333010.

It is an arithmetic number, because the mean of its divisors is an integer number (60333010).

Almost surely, 2^120666019 is an apocalyptic number.

120666019 is a deficient number, since it is larger than the sum of its proper divisors (1).

120666019 is an equidigital number, since it uses as much as digits as its factorization.

120666019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 120666019 is about 10984.8085554551. The cubic root of 120666019 is about 494.1532563337.

The spelling of 120666019 in words is "one hundred twenty million, six hundred sixty-six thousand, nineteen".