84105071 has 2 divisors, whose sum is σ = 84105072. Its totient is φ = 84105070.

The previous prime is 84105061. The next prime is 84105097. The reversal of 84105071 is 17050148.

It is an a-pointer prime, because the next prime (84105097) can be obtained adding 84105071 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84105071 - 2²² = 79910767 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84105071.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84105061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42052535 + 42052536.

It is an arithmetic number, because the mean of its divisors is an integer number (42052536).

Almost surely, 2^84105071 is an apocalyptic number.

84105071 is a deficient number, since it is larger than the sum of its proper divisors (1).

84105071 is an equidigital number, since it uses as much as digits as its factorization.

84105071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 84105071 is about 9170.8816915278. The cubic root of 84105071 is about 438.1344412608.

The spelling of 84105071 in words is "eighty-four million, one hundred five thousand, seventy-one".