120247591 has 2 divisors, whose sum is σ = 120247592. Its totient is φ = 120247590.

The previous prime is 120247583. The next prime is 120247597. The reversal of 120247591 is 195742021.

It is a strong prime.

It is an emirp because it is prime and its reverse (195742021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120247591 - 2³ = 120247583 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120247597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60123795 + 60123796.

It is an arithmetic number, because the mean of its divisors is an integer number (60123796).

Almost surely, 2^120247591 is an apocalyptic number.

120247591 is a deficient number, since it is larger than the sum of its proper divisors (1).

120247591 is an equidigital number, since it uses as much as digits as its factorization.

120247591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 120247591 is about 10965.7462582352. The cubic root of 120247591 is about 493.5814106685.

The spelling of 120247591 in words is "one hundred twenty million, two hundred forty-seven thousand, five hundred ninety-one".