42043055423 has 2 divisors, whose sum is σ = 42043055424. Its totient is φ = 42043055422.

The previous prime is 42043055401. The next prime is 42043055449. The reversal of 42043055423 is 32455034024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42043055423 - 2¹⁴ = 42043039039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42043055423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42043055473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21021527711 + 21021527712.

It is an arithmetic number, because the mean of its divisors is an integer number (21021527712).

Almost surely, 2^42043055423 is an apocalyptic number.

42043055423 is a deficient number, since it is larger than the sum of its proper divisors (1).

42043055423 is an equidigital number, since it uses as much as digits as its factorization.

42043055423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 32.

Adding to 42043055423 its reverse (32455034024), we get a palindrome (74498089447).

The spelling of 42043055423 in words is "forty-two billion, forty-three million, fifty-five thousand, four hundred twenty-three".