120010503 has 4 divisors (see below), whose sum is σ = 160014008. Its totient is φ = 80007000.

The previous prime is 120010487. The next prime is 120010507. The reversal of 120010503 is 305010021.

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

It is not a de Polignac number, because 120010503 - 2⁴ = 120010487 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 (120010507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20001748 + ... + 20001753.

It is an arithmetic number, because the mean of its divisors is an integer number (40003502).

Almost surely, 2^120010503 is an apocalyptic number.

120010503 is a deficient number, since it is larger than the sum of its proper divisors (40003505).

120010503 is an equidigital number, since it uses as much as digits as its factorization.

120010503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40003504.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 120010503 is about 10954.9305337825. The cubic root of 120010503 is about 493.2568047937.

Adding to 120010503 its reverse (305010021), we get a palindrome (425020524).

The spelling of 120010503 in words is "one hundred twenty million, ten thousand, five hundred three".