42443333423 has 2 divisors, whose sum is σ = 42443333424. Its totient is φ = 42443333422.

The previous prime is 42443333419. The next prime is 42443333437. The reversal of 42443333423 is 32433334424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42443333423 - 2² = 42443333419 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42443336423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21221666711 + 21221666712.

It is an arithmetic number, because the mean of its divisors is an integer number (21221666712).

Almost surely, 2^42443333423 is an apocalyptic number.

42443333423 is a deficient number, since it is larger than the sum of its proper divisors (1).

42443333423 is an equidigital number, since it uses as much as digits as its factorization.

42443333423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 35.

Adding to 42443333423 its reverse (32433334424), we get a palindrome (74876667847).

The spelling of 42443333423 in words is "forty-two billion, four hundred forty-three million, three hundred thirty-three thousand, four hundred twenty-three".