83742643 has 2 divisors, whose sum is σ = 83742644. Its totient is φ = 83742642.

The previous prime is 83742641. The next prime is 83742647. The reversal of 83742643 is 34624738.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83742643 - 2¹ = 83742641 is a prime.

Together with 83742641, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (83742641) 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 as a sum of consecutive naturals, namely, 41871321 + 41871322.

It is an arithmetic number, because the mean of its divisors is an integer number (41871322).

Almost surely, 2^83742643 is an apocalyptic number.

83742643 is a deficient number, since it is larger than the sum of its proper divisors (1).

83742643 is an equidigital number, since it uses as much as digits as its factorization.

83742643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 37.

The square root of 83742643 is about 9151.1006441848. The cubic root of 83742643 is about 437.5041945720.

The spelling of 83742643 in words is "eighty-three million, seven hundred forty-two thousand, six hundred forty-three".