71123029 has 2 divisors, whose sum is σ = 71123030. Its totient is φ = 71123028.

The previous prime is 71122973. The next prime is 71123047. The reversal of 71123029 is 92032117.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64883025 + 6240004 = 8055^2 + 2498^2 .

It is a cyclic number.

It is not a de Polignac number, because 71123029 - 2⁹ = 71122517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71122994 and 71123012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71123329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35561514 + 35561515.

It is an arithmetic number, because the mean of its divisors is an integer number (35561515).

Almost surely, 2^71123029 is an apocalyptic number.

It is an amenable number.

71123029 is a deficient number, since it is larger than the sum of its proper divisors (1).

71123029 is an equidigital number, since it uses as much as digits as its factorization.

71123029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 71123029 is about 8433.4470413942. The cubic root of 71123029 is about 414.3208109500.

The spelling of 71123029 in words is "seventy-one million, one hundred twenty-three thousand, twenty-nine".