71161124 has 6 divisors (see below), whose sum is σ = 124531974. Its totient is φ = 35580560.

The previous prime is 71161109. The next prime is 71161127. The reversal of 71161124 is 42116117.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 71098624 + 62500 = 8432^2 + 250^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 71161124.

It is not an unprimeable number, because it can be changed into a prime (71161127) 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, 8895137 + ... + 8895144.

It is an arithmetic number, because the mean of its divisors is an integer number (20755329).

Almost surely, 2^71161124 is an apocalyptic number.

It is an amenable number.

71161124 is a deficient number, since it is larger than the sum of its proper divisors (53370850).

71161124 is a wasteful number, since it uses less digits than its factorization.

71161124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17790285 (or 17790283 counting only the distinct ones).

The product of its digits is 336, while the sum is 23.

The square root of 71161124 is about 8435.7053054265. The cubic root of 71161124 is about 414.3947707459.

The spelling of 71161124 in words is "seventy-one million, one hundred sixty-one thousand, one hundred twenty-four".