120404503 has 4 divisors (see below), whose sum is σ = 120528720. Its totient is φ = 120280288.

The previous prime is 120404497. The next prime is 120404519. The reversal of 120404503 is 305404021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 305404021 = 13 ⋅23492617.

It is a cyclic number.

It is not a de Polignac number, because 120404503 - 2⁹ = 120403991 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 (120404533) 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, 60643 + ... + 62596.

It is an arithmetic number, because the mean of its divisors is an integer number (30132180).

Almost surely, 2^120404503 is an apocalyptic number.

120404503 is a deficient number, since it is larger than the sum of its proper divisors (124217).

120404503 is an equidigital number, since it uses as much as digits as its factorization.

120404503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124216.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 120404503 is about 10972.8985687465. The cubic root of 120404503 is about 493.7960100691.

Adding to 120404503 its reverse (305404021), we get a palindrome (425808524).

The spelling of 120404503 in words is "one hundred twenty million, four hundred four thousand, five hundred three".