505134143 has 2 divisors, whose sum is σ = 505134144. Its totient is φ = 505134142.

The previous prime is 505134139. The next prime is 505134163. The reversal of 505134143 is 341431505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505134143 - 2² = 505134139 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505134103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252567071 + 252567072.

It is an arithmetic number, because the mean of its divisors is an integer number (252567072).

Almost surely, 2^505134143 is an apocalyptic number.

505134143 is a deficient number, since it is larger than the sum of its proper divisors (1).

505134143 is an equidigital number, since it uses as much as digits as its factorization.

505134143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 505134143 is about 22475.1894986449. The cubic root of 505134143 is about 796.4079282278.

Adding to 505134143 its reverse (341431505), we get a palindrome (846565648).

The spelling of 505134143 in words is "five hundred five million, one hundred thirty-four thousand, one hundred forty-three".