505042147 has 2 divisors, whose sum is σ = 505042148. Its totient is φ = 505042146.

The previous prime is 505042129. The next prime is 505042151. The reversal of 505042147 is 741240505.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 505042147 - 2⁷ = 505042019 is a prime.

It is equal to p_26607133 and since 505042147 and 26607133 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (505042547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252521073 + 252521074.

It is an arithmetic number, because the mean of its divisors is an integer number (252521074).

Almost surely, 2^505042147 is an apocalyptic number.

505042147 is a deficient number, since it is larger than the sum of its proper divisors (1).

505042147 is an equidigital number, since it uses as much as digits as its factorization.

505042147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 505042147 is about 22473.1427931209. The cubic root of 505042147 is about 796.3595775121.

The spelling of 505042147 in words is "five hundred five million, forty-two thousand, one hundred forty-seven".