85244143 has 2 divisors, whose sum is σ = 85244144. Its totient is φ = 85244142.

The previous prime is 85244129. The next prime is 85244161. The reversal of 85244143 is 34144258.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85244143 - 2¹³ = 85235951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85244123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42622071 + 42622072.

It is an arithmetic number, because the mean of its divisors is an integer number (42622072).

Almost surely, 2^85244143 is an apocalyptic number.

85244143 is a deficient number, since it is larger than the sum of its proper divisors (1).

85244143 is an equidigital number, since it uses as much as digits as its factorization.

85244143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15360, while the sum is 31.

The square root of 85244143 is about 9232.7754765293. The cubic root of 85244143 is about 440.1035276363.

The spelling of 85244143 in words is "eighty-five million, two hundred forty-four thousand, one hundred forty-three".