71120039 has 2 divisors, whose sum is σ = 71120040. Its totient is φ = 71120038.

The previous prime is 71120033. The next prime is 71120047. The reversal of 71120039 is 93002117.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71120039 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 71119996 and 71120023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71120033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35560019 + 35560020.

It is an arithmetic number, because the mean of its divisors is an integer number (35560020).

Almost surely, 2^71120039 is an apocalyptic number.

71120039 is a deficient number, since it is larger than the sum of its proper divisors (1).

71120039 is an equidigital number, since it uses as much as digits as its factorization.

71120039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 71120039 is about 8433.2697691939. The cubic root of 71120039 is about 414.3150048766.

The spelling of 71120039 in words is "seventy-one million, one hundred twenty thousand, thirty-nine".