83242861 has 4 divisors (see below), whose sum is σ = 89646172. Its totient is φ = 76839552.

The previous prime is 83242837. The next prime is 83242867. The reversal of 83242861 is 16824238.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16824238 = 2 ⋅8412119.

It can be written as a sum of positive squares in 2 ways, for example, as 26842761 + 56400100 = 5181^2 + 7510^2 .

It is a cyclic number.

It is not a de Polignac number, because 83242861 - 2⁹ = 83242349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83242867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3201636 + ... + 3201661.

It is an arithmetic number, because the mean of its divisors is an integer number (22411543).

Almost surely, 2^83242861 is an apocalyptic number.

It is an amenable number.

83242861 is a deficient number, since it is larger than the sum of its proper divisors (6403311).

83242861 is a wasteful number, since it uses less digits than its factorization.

83242861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6403310.

The product of its digits is 18432, while the sum is 34.

The square root of 83242861 is about 9123.7525722698. The cubic root of 83242861 is about 436.6321054039.

The spelling of 83242861 in words is "eighty-three million, two hundred forty-two thousand, eight hundred sixty-one".