71542063 has 2 divisors, whose sum is σ = 71542064. Its totient is φ = 71542062.

The previous prime is 71541989. The next prime is 71542073. The reversal of 71542063 is 36024517.

It is a strong prime.

It is an emirp because it is prime and its reverse (36024517) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71542063 - 2²¹ = 69444911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71542073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35771031 + 35771032.

It is an arithmetic number, because the mean of its divisors is an integer number (35771032).

Almost surely, 2^71542063 is an apocalyptic number.

71542063 is a deficient number, since it is larger than the sum of its proper divisors (1).

71542063 is an equidigital number, since it uses as much as digits as its factorization.

71542063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 71542063 is about 8458.2541342762. The cubic root of 71542063 is about 415.1328998075.

It can be divided in two parts, 715 and 42063, that added together give a triangular number (42778 = T₂₉₂).

The spelling of 71542063 in words is "seventy-one million, five hundred forty-two thousand, sixty-three".