504139123 has 2 divisors, whose sum is σ = 504139124. Its totient is φ = 504139122.

The previous prime is 504139091. The next prime is 504139189. The reversal of 504139123 is 321931405.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 504139123 - 2⁵ = 504139091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 504139091 and 504139100.

It is not a weakly prime, because it can be changed into another prime (504139193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252069561 + 252069562.

It is an arithmetic number, because the mean of its divisors is an integer number (252069562).

Almost surely, 2^504139123 is an apocalyptic number.

504139123 is a deficient number, since it is larger than the sum of its proper divisors (1).

504139123 is an equidigital number, since it uses as much as digits as its factorization.

504139123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 504139123 is about 22453.0426223263. The cubic root of 504139123 is about 795.8846594956.

It can be divided in two parts, 50413 and 9123, that added together give a square (59536 = 244²).

The spelling of 504139123 in words is "five hundred four million, one hundred thirty-nine thousand, one hundred twenty-three".