555242143 has 2 divisors, whose sum is σ = 555242144. Its totient is φ = 555242142.

The previous prime is 555242123. The next prime is 555242167. The reversal of 555242143 is 341242555.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-555242143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (555242123) 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 as a sum of consecutive naturals, namely, 277621071 + 277621072.

It is an arithmetic number, because the mean of its divisors is an integer number (277621072).

Almost surely, 2^555242143 is an apocalyptic number.

555242143 is a deficient number, since it is larger than the sum of its proper divisors (1).

555242143 is an equidigital number, since it uses as much as digits as its factorization.

555242143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24000, while the sum is 31.

The square root of 555242143 is about 23563.5766173134. The cubic root of 555242143 is about 821.9160739987.

Adding to 555242143 its reverse (341242555), we get a palindrome (896484698).

The spelling of 555242143 in words is "five hundred fifty-five million, two hundred forty-two thousand, one hundred forty-three".