503125123 has 2 divisors, whose sum is σ = 503125124. Its totient is φ = 503125122.

The previous prime is 503125097. The next prime is 503125127. The reversal of 503125123 is 321521305.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 503125123 - 2¹³ = 503116931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 503125094 and 503125103.

It is not a weakly prime, because it can be changed into another prime (503125127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251562561 + 251562562.

It is an arithmetic number, because the mean of its divisors is an integer number (251562562).

Almost surely, 2^503125123 is an apocalyptic number.

503125123 is a deficient number, since it is larger than the sum of its proper divisors (1).

503125123 is an equidigital number, since it uses as much as digits as its factorization.

503125123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 503125123 is about 22430.4507979666. The cubic root of 503125123 is about 795.3507005913.

Adding to 503125123 its reverse (321521305), we get a palindrome (824646428).

The spelling of 503125123 in words is "five hundred three million, one hundred twenty-five thousand, one hundred twenty-three".