120643619 has 2 divisors, whose sum is σ = 120643620. Its totient is φ = 120643618.

The previous prime is 120643609. The next prime is 120643631. The reversal of 120643619 is 916346021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120643619 - 2⁴ = 120643603 is a prime.

It is a super-2 number, since 2×120643619² = 29109765610834322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (120643609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60321809 + 60321810.

It is an arithmetic number, because the mean of its divisors is an integer number (60321810).

Almost surely, 2^120643619 is an apocalyptic number.

120643619 is a deficient number, since it is larger than the sum of its proper divisors (1).

120643619 is an equidigital number, since it uses as much as digits as its factorization.

120643619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 120643619 is about 10983.7889182194. The cubic root of 120643619 is about 494.1226768382.

The spelling of 120643619 in words is "one hundred twenty million, six hundred forty-three thousand, six hundred nineteen".