143840085 has 16 divisors (see below), whose sum is σ = 230391744. Its totient is φ = 76632192.

The previous prime is 143840083. The next prime is 143840113. The reversal of 143840085 is 580048341.

It is not a de Polignac number, because 143840085 - 2¹ = 143840083 is a prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143840083) 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 15 ways as a sum of consecutive naturals, for example, 10854 + ... + 20136.

It is an arithmetic number, because the mean of its divisors is an integer number (14399484).

Almost surely, 2^143840085 is an apocalyptic number.

143840085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

143840085 is a deficient number, since it is larger than the sum of its proper divisors (86551659).

143840085 is a wasteful number, since it uses less digits than its factorization.

143840085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10324.

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 143840085 is about 11993.3350240873. The cubic root of 143840085 is about 523.9541811130.

The spelling of 143840085 in words is "one hundred forty-three million, eight hundred forty thousand, eighty-five".