42377815720423 has 2 divisors, whose sum is σ = 42377815720424. Its totient is φ = 42377815720422.

The previous prime is 42377815720367. The next prime is 42377815720441. The reversal of 42377815720423 is 32402751877324.

42377815720423 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 a de Polignac number, because none of the positive numbers 2^k-42377815720423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42377815720223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21188907860211 + 21188907860212.

It is an arithmetic number, because the mean of its divisors is an integer number (21188907860212).

Almost surely, 2^{42377815720423} is an apocalyptic number.

42377815720423 is a deficient number, since it is larger than the sum of its proper divisors (1).

42377815720423 is an equidigital number, since it uses as much as digits as its factorization.

42377815720423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15805440, while the sum is 55.

The spelling of 42377815720423 in words is "forty-two trillion, three hundred seventy-seven billion, eight hundred fifteen million, seven hundred twenty thousand, four hundred twenty-three".