83740143 has 4 divisors (see below), whose sum is σ = 111653528. Its totient is φ = 55826760.

The previous prime is 83740141. The next prime is 83740157. The reversal of 83740143 is 34104738.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 83740143 - 2¹ = 83740141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83740143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83740141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13956688 + ... + 13956693.

It is an arithmetic number, because the mean of its divisors is an integer number (27913382).

Almost surely, 2^83740143 is an apocalyptic number.

83740143 is a deficient number, since it is larger than the sum of its proper divisors (27913385).

83740143 is a wasteful number, since it uses less digits than its factorization.

83740143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27913384.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 83740143 is about 9150.9640475744. The cubic root of 83740143 is about 437.4998408707.

The spelling of 83740143 in words is "eighty-three million, seven hundred forty thousand, one hundred forty-three".