42718977127 has 2 divisors, whose sum is σ = 42718977128. Its totient is φ = 42718977126.

The previous prime is 42718977107. The next prime is 42718977149. The reversal of 42718977127 is 72177981724.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42718977127 - 2⁷ = 42718976999 is a prime.

It is a super-2 number, since 2×42718977127² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42718977107) 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, 21359488563 + 21359488564.

It is an arithmetic number, because the mean of its divisors is an integer number (21359488564).

Almost surely, 2^42718977127 is an apocalyptic number.

42718977127 is a deficient number, since it is larger than the sum of its proper divisors (1).

42718977127 is an equidigital number, since it uses as much as digits as its factorization.

42718977127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2765952, while the sum is 55.

The spelling of 42718977127 in words is "forty-two billion, seven hundred eighteen million, nine hundred seventy-seven thousand, one hundred twenty-seven".