71106239 has 2 divisors, whose sum is σ = 71106240. Its totient is φ = 71106238.

The previous prime is 71106221. The next prime is 71106251. The reversal of 71106239 is 93260117.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71106239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71106209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35553119 + 35553120.

It is an arithmetic number, because the mean of its divisors is an integer number (35553120).

Almost surely, 2^71106239 is an apocalyptic number.

71106239 is a deficient number, since it is larger than the sum of its proper divisors (1).

71106239 is an equidigital number, since it uses as much as digits as its factorization.

71106239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 71106239 is about 8432.4515415151. The cubic root of 71106239 is about 414.2882055057.

The spelling of 71106239 in words is "seventy-one million, one hundred six thousand, two hundred thirty-nine".