42155043223 has 2 divisors, whose sum is σ = 42155043224. Its totient is φ = 42155043222.

The previous prime is 42155043199. The next prime is 42155043239. The reversal of 42155043223 is 32234055124.

42155043223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42155043223 - 2⁹ = 42155042711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42155043283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21077521611 + 21077521612.

It is an arithmetic number, because the mean of its divisors is an integer number (21077521612).

Almost surely, 2^42155043223 is an apocalyptic number.

42155043223 is a deficient number, since it is larger than the sum of its proper divisors (1).

42155043223 is an equidigital number, since it uses as much as digits as its factorization.

42155043223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 42155043223 its reverse (32234055124), we get a palindrome (74389098347).

The spelling of 42155043223 in words is "forty-two billion, one hundred fifty-five million, forty-three thousand, two hundred twenty-three".