120645103 has 4 divisors (see below), whose sum is σ = 120762928. Its totient is φ = 120527280.

The previous prime is 120645101. The next prime is 120645113. The reversal of 120645103 is 301546021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120645103 - 2¹ = 120645101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120645101) 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 in 3 ways as a sum of consecutive naturals, for example, 57363 + ... + 59428.

It is an arithmetic number, because the mean of its divisors is an integer number (30190732).

Almost surely, 2^120645103 is an apocalyptic number.

120645103 is a deficient number, since it is larger than the sum of its proper divisors (117825).

120645103 is a wasteful number, since it uses less digits than its factorization.

120645103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117824.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 120645103 is about 10983.8564721140. The cubic root of 120645103 is about 494.1247028468.

The spelling of 120645103 in words is "one hundred twenty million, six hundred forty-five thousand, one hundred three".