42865850723 has 2 divisors, whose sum is σ = 42865850724. Its totient is φ = 42865850722.

The previous prime is 42865850683. The next prime is 42865850791. The reversal of 42865850723 is 32705856824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42865850723 - 2¹⁶ = 42865785187 is a prime.

It is not a weakly prime, because it can be changed into another prime (42865850323) 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, 21432925361 + 21432925362.

It is an arithmetic number, because the mean of its divisors is an integer number (21432925362).

Almost surely, 2^42865850723 is an apocalyptic number.

42865850723 is a deficient number, since it is larger than the sum of its proper divisors (1).

42865850723 is an equidigital number, since it uses as much as digits as its factorization.

42865850723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3225600, while the sum is 50.

The spelling of 42865850723 in words is "forty-two billion, eight hundred sixty-five million, eight hundred fifty thousand, seven hundred twenty-three".