71310642 has 16 divisors (see below), whose sum is σ = 153592320. Its totient is φ = 21941712.

The previous prime is 71310637. The next prime is 71310643. The reversal of 71310642 is 24601317.

It is not an unprimeable number, because it can be changed into a prime (71310643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 457042 + ... + 457197.

It is an arithmetic number, because the mean of its divisors is an integer number (9599520).

Almost surely, 2^71310642 is an apocalyptic number.

71310642 is an abundant number, since it is smaller than the sum of its proper divisors (82281678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71310642 is a wasteful number, since it uses less digits than its factorization.

71310642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914257.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 71310642 is about 8444.5628661287. The cubic root of 71310642 is about 414.6847986417.

Adding to 71310642 its reverse (24601317), we get a palindrome (95911959).

The spelling of 71310642 in words is "seventy-one million, three hundred ten thousand, six hundred forty-two".