500203121 has 16 divisors (see below), whose sum is σ = 587580480. Its totient is φ = 420718080.

The previous prime is 500203117. The next prime is 500203129. The reversal of 500203121 is 121302005.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 500203121 - 2² = 500203117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 500203096 and 500203105.

It is not an unprimeable number, because it can be changed into a prime (500203129) 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 15 ways as a sum of consecutive naturals, for example, 11636 + ... + 33701.

It is an arithmetic number, because the mean of its divisors is an integer number (36723780).

Almost surely, 2^500203121 is an apocalyptic number.

It is an amenable number.

500203121 is a deficient number, since it is larger than the sum of its proper divisors (87377359).

500203121 is a wasteful number, since it uses less digits than its factorization.

500203121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45424.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 500203121 is about 22365.2212374481. The cubic root of 500203121 is about 793.8079895964.

Adding to 500203121 its reverse (121302005), we get a palindrome (621505126).

The spelling of 500203121 in words is "five hundred million, two hundred three thousand, one hundred twenty-one".