120344563 has 2 divisors, whose sum is σ = 120344564. Its totient is φ = 120344562.

The previous prime is 120344561. The next prime is 120344599. The reversal of 120344563 is 365443021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120344563 - 2¹ = 120344561 is a prime.

Together with 120344561, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (120344561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60172281 + 60172282.

It is an arithmetic number, because the mean of its divisors is an integer number (60172282).

Almost surely, 2^120344563 is an apocalyptic number.

120344563 is a deficient number, since it is larger than the sum of its proper divisors (1).

120344563 is an equidigital number, since it uses as much as digits as its factorization.

120344563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 120344563 is about 10970.1669540623. The cubic root of 120344563 is about 493.7140556433.

Adding to 120344563 its reverse (365443021), we get a palindrome (485787584).

The spelling of 120344563 in words is "one hundred twenty million, three hundred forty-four thousand, five hundred sixty-three".