85204143 has 10 divisors (see below), whose sum is σ = 127280384. Its totient is φ = 56802708.

The previous prime is 85204123. The next prime is 85204159. The reversal of 85204143 is 34140258.

It is not a de Polignac number, because 85204143 - 2⁵ = 85204111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85204123) 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 in 9 ways as a sum of consecutive naturals, for example, 525871 + ... + 526032.

Almost surely, 2^85204143 is an apocalyptic number.

85204143 is a deficient number, since it is larger than the sum of its proper divisors (42076241).

85204143 is a wasteful number, since it uses less digits than its factorization.

85204143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051915 (or 1051906 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 85204143 is about 9230.6090264944. The cubic root of 85204143 is about 440.0346787405.

The spelling of 85204143 in words is "eighty-five million, two hundred four thousand, one hundred forty-three".