503405122 has 16 divisors (see below), whose sum is σ = 872210592. Its totient is φ = 215360320.

The previous prime is 503405083. The next prime is 503405129. The reversal of 503405122 is 221504305.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 503405093 and 503405102.

It is not an unprimeable number, because it can be changed into a prime (503405129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 672628 + ... + 673375.

It is an arithmetic number, because the mean of its divisors is an integer number (54513162).

Almost surely, 2^503405122 is an apocalyptic number.

503405122 is a deficient number, since it is larger than the sum of its proper divisors (368805470).

503405122 is a wasteful number, since it uses less digits than its factorization.

503405122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346033.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 503405122 is about 22436.6914227566. The cubic root of 503405122 is about 795.4982159849.

Adding to 503405122 its reverse (221504305), we get a palindrome (724909427).

The spelling of 503405122 in words is "five hundred three million, four hundred five thousand, one hundred twenty-two".