120106503 has 16 divisors (see below), whose sum is σ = 194112000. Its totient is φ = 72791640.

The previous prime is 120106501. The next prime is 120106517. The reversal of 120106503 is 305601021.

120106503 is a `hidden beast` number, since 1 + 2 + 0 + 10 + 650 + 3 = 666.

It is not a de Polignac number, because 120106503 - 2¹ = 120106501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120106501) 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 in 15 ways as a sum of consecutive naturals, for example, 201903 + ... + 202496.

It is an arithmetic number, because the mean of its divisors is an integer number (12132000).

Almost surely, 2^120106503 is an apocalyptic number.

120106503 is a deficient number, since it is larger than the sum of its proper divisors (74005497).

120106503 is a wasteful number, since it uses less digits than its factorization.

120106503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404419 (or 404413 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 120106503 is about 10959.3112466067. The cubic root of 120106503 is about 493.3882933757.

Adding to 120106503 its reverse (305601021), we get a palindrome (425707524).

The spelling of 120106503 in words is "one hundred twenty million, one hundred six thousand, five hundred three".