71047423 has 4 divisors (see below), whose sum is σ = 71072248. Its totient is φ = 71022600.

The previous prime is 71047411. The next prime is 71047429. The reversal of 71047423 is 32474017.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71047423 - 2²⁵ = 37492991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71047391 and 71047400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71047429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7461 + ... + 14062.

It is an arithmetic number, because the mean of its divisors is an integer number (17768062).

Almost surely, 2^71047423 is an apocalyptic number.

71047423 is a deficient number, since it is larger than the sum of its proper divisors (24825).

71047423 is a wasteful number, since it uses less digits than its factorization.

71047423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24824.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 71047423 is about 8428.9633407674. The cubic root of 71047423 is about 414.1739469122.

The spelling of 71047423 in words is "seventy-one million, forty-seven thousand, four hundred twenty-three".