1204020503 has 6 divisors (see below), whose sum is σ = 1400595336. Its totient is φ = 1032017532.

The previous prime is 1204020497. The next prime is 1204020523. The reversal of 1204020503 is 3050204021.

It is not a de Polignac number, because 1204020503 - 2⁴ = 1204020487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204020523) 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 5 ways as a sum of consecutive naturals, for example, 12285875 + ... + 12285972.

It is an arithmetic number, because the mean of its divisors is an integer number (233432556).

Almost surely, 2^1204020503 is an apocalyptic number.

1204020503 is a deficient number, since it is larger than the sum of its proper divisors (196574833).

1204020503 is an equidigital number, since it uses as much as digits as its factorization.

1204020503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24571861 (or 24571854 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 1204020503 is about 34698.9985878555. The cubic root of 1204020503 is about 1063.8440301156.

Adding to 1204020503 its reverse (3050204021), we get a palindrome (4254224524).

The spelling of 1204020503 in words is "one billion, two hundred four million, twenty thousand, five hundred three".