42723441797 has 2 divisors, whose sum is σ = 42723441798. Its totient is φ = 42723441796.

The previous prime is 42723441793. The next prime is 42723441809. The reversal of 42723441797 is 79714432724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40172585761 + 2550856036 = 200431^2 + 50506^2 .

It is a cyclic number.

It is not a de Polignac number, because 42723441797 - 2² = 42723441793 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42723441793) 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, 21361720898 + 21361720899.

It is an arithmetic number, because the mean of its divisors is an integer number (21361720899).

Almost surely, 2^42723441797 is an apocalyptic number.

It is an amenable number.

42723441797 is a deficient number, since it is larger than the sum of its proper divisors (1).

42723441797 is an equidigital number, since it uses as much as digits as its factorization.

42723441797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2370816, while the sum is 50.

The spelling of 42723441797 in words is "forty-two billion, seven hundred twenty-three million, four hundred forty-one thousand, seven hundred ninety-seven".