71443012 has 6 divisors (see below), whose sum is σ = 125025278. Its totient is φ = 35721504.

The previous prime is 71442953. The next prime is 71443013. The reversal of 71443012 is 21034417.

71443012 is nontrivially palindromic in base 16.

It can be written as a sum of positive squares in only one way, i.e., 58003456 + 13439556 = 7616^2 + 3666^2 .

It is a zygodrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (71443013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8930373 + ... + 8930380.

Almost surely, 2^71443012 is an apocalyptic number.

It is an amenable number.

71443012 is a deficient number, since it is larger than the sum of its proper divisors (53582266).

71443012 is a wasteful number, since it uses less digits than its factorization.

71443012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17860757 (or 17860755 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 71443012 is about 8452.3968198376. The cubic root of 71443012 is about 414.9412255275.

Adding to 71443012 its reverse (21034417), we get a palindrome (92477429).

The spelling of 71443012 in words is "seventy-one million, four hundred forty-three thousand, twelve".