504121403 has 4 divisors (see below), whose sum is σ = 508746480. Its totient is φ = 499496328.

The previous prime is 504121399. The next prime is 504121421. The reversal of 504121403 is 304121405.

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

It is a cyclic number.

It is not a de Polignac number, because 504121403 - 2² = 504121399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (504121493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2312375 + ... + 2312592.

It is an arithmetic number, because the mean of its divisors is an integer number (127186620).

Almost surely, 2^504121403 is an apocalyptic number.

504121403 is a deficient number, since it is larger than the sum of its proper divisors (4625077).

504121403 is a wasteful number, since it uses less digits than its factorization.

504121403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4625076.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 504121403 is about 22452.6480175502. The cubic root of 504121403 is about 795.8753345291.

Adding to 504121403 its reverse (304121405), we get a palindrome (808242808).

It can be divided in two parts, 50412 and 1403, that added together give a palindrome (51815).

The spelling of 504121403 in words is "five hundred four million, one hundred twenty-one thousand, four hundred three".