120819847 has 2 divisors, whose sum is σ = 120819848. Its totient is φ = 120819846.

The previous prime is 120819823. The next prime is 120819857. The reversal of 120819847 is 748918021.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (748918021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120819847 - 2²³ = 112431239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120819817) 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 as a sum of consecutive naturals, namely, 60409923 + 60409924.

It is an arithmetic number, because the mean of its divisors is an integer number (60409924).

Almost surely, 2^120819847 is an apocalyptic number.

120819847 is a deficient number, since it is larger than the sum of its proper divisors (1).

120819847 is an equidigital number, since it uses as much as digits as its factorization.

120819847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 120819847 is about 10991.8081770016. The cubic root of 120819847 is about 494.3631533945.

The spelling of 120819847 in words is "one hundred twenty million, eight hundred nineteen thousand, eight hundred forty-seven".