42278544023 has 2 divisors, whose sum is σ = 42278544024. Its totient is φ = 42278544022.

The previous prime is 42278543939. The next prime is 42278544029. The reversal of 42278544023 is 32044587224.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42278544023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42278544029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21139272011 + 21139272012.

It is an arithmetic number, because the mean of its divisors is an integer number (21139272012).

Almost surely, 2^42278544023 is an apocalyptic number.

42278544023 is a deficient number, since it is larger than the sum of its proper divisors (1).

42278544023 is an equidigital number, since it uses as much as digits as its factorization.

42278544023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 430080, while the sum is 41.

The spelling of 42278544023 in words is "forty-two billion, two hundred seventy-eight million, five hundred forty-four thousand, twenty-three".