71003642 has 8 divisors (see below), whose sum is σ = 106885332. Its totient is φ = 35375200.

The previous prime is 71003641. The next prime is 71003651. The reversal of 71003642 is 24630017.

It can be written as a sum of positive squares in 2 ways, for example, as 67584841 + 3418801 = 8221^2 + 1849^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (71003641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62609 + ... + 63732.

Almost surely, 2^71003642 is an apocalyptic number.

71003642 is a deficient number, since it is larger than the sum of its proper divisors (35881690).

71003642 is a wasteful number, since it uses less digits than its factorization.

71003642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126624.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 71003642 is about 8426.3658833450. The cubic root of 71003642 is about 414.0888550364.

Adding to 71003642 its reverse (24630017), we get a palindrome (95633659).

The spelling of 71003642 in words is "seventy-one million, three thousand, six hundred forty-two".