42723441823 has 2 divisors, whose sum is σ = 42723441824. Its totient is φ = 42723441822.

The previous prime is 42723441809. The next prime is 42723441853. The reversal of 42723441823 is 32814432724.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42723441823 - 2²⁵ = 42689887391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42723441853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21361720911 + 21361720912.

It is an arithmetic number, because the mean of its divisors is an integer number (21361720912).

Almost surely, 2^42723441823 is an apocalyptic number.

42723441823 is a deficient number, since it is larger than the sum of its proper divisors (1).

42723441823 is an equidigital number, since it uses as much as digits as its factorization.

42723441823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 258048, while the sum is 40.

Subtracting from 42723441823 its reverse (32814432724), we obtain a palindrome (9909009099).

The spelling of 42723441823 in words is "forty-two billion, seven hundred twenty-three million, four hundred forty-one thousand, eight hundred twenty-three".