83722143 has 4 divisors (see below), whose sum is σ = 111629528. Its totient is φ = 55814760.

The previous prime is 83722141. The next prime is 83722153. The reversal of 83722143 is 34122738.

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

It is not a de Polignac number, because 83722143 - 2¹ = 83722141 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 83722143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83722141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13953688 + ... + 13953693.

It is an arithmetic number, because the mean of its divisors is an integer number (27907382).

Almost surely, 2^83722143 is an apocalyptic number.

83722143 is a deficient number, since it is larger than the sum of its proper divisors (27907385).

83722143 is a wasteful number, since it uses less digits than its factorization.

83722143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27907384.

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

The square root of 83722143 is about 9149.9804917825. The cubic root of 83722143 is about 437.4684916628.

The spelling of 83722143 in words is "eighty-three million, seven hundred twenty-two thousand, one hundred forty-three".