42112541971 has 2 divisors, whose sum is σ = 42112541972. Its totient is φ = 42112541970.

The previous prime is 42112541969. The next prime is 42112542079. The reversal of 42112541971 is 17914521124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42112541971 - 2¹ = 42112541969 is a prime.

Together with 42112541969, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 42112541971.

It is not a weakly prime, because it can be changed into another prime (42112541171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21056270985 + 21056270986.

It is an arithmetic number, because the mean of its divisors is an integer number (21056270986).

Almost surely, 2^42112541971 is an apocalyptic number.

42112541971 is a deficient number, since it is larger than the sum of its proper divisors (1).

42112541971 is an equidigital number, since it uses as much as digits as its factorization.

42112541971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 37.

The spelling of 42112541971 in words is "forty-two billion, one hundred twelve million, five hundred forty-one thousand, nine hundred seventy-one".