71308742 has 8 divisors (see below), whose sum is σ = 110413632. Its totient is φ = 34504200.

The previous prime is 71308739. The next prime is 71308753. The reversal of 71308742 is 24780317.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 71308699 and 71308708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 575009 + ... + 575132.

It is an arithmetic number, because the mean of its divisors is an integer number (13801704).

Almost surely, 2^71308742 is an apocalyptic number.

71308742 is a deficient number, since it is larger than the sum of its proper divisors (39104890).

71308742 is a wasteful number, since it uses less digits than its factorization.

71308742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150174.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 71308742 is about 8444.4503669570. The cubic root of 71308742 is about 414.6811156565.

The spelling of 71308742 in words is "seventy-one million, three hundred eight thousand, seven hundred forty-two".