71147143 has 8 divisors (see below), whose sum is σ = 72806400. Its totient is φ = 69494040.

The previous prime is 71147137. The next prime is 71147149. The reversal of 71147143 is 34174117.

It is an interprime number because it is at equal distance from previous prime (71147137) and next prime (71147149).

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

It is a cyclic number.

It is not a de Polignac number, because 71147143 - 2⁹ = 71146631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71147149) 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, 28458 + ... + 30856.

It is an arithmetic number, because the mean of its divisors is an integer number (9100800).

Almost surely, 2^71147143 is an apocalyptic number.

71147143 is a deficient number, since it is larger than the sum of its proper divisors (1659257).

71147143 is a wasteful number, since it uses less digits than its factorization.

71147143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3077.

The product of its digits is 2352, while the sum is 28.

The square root of 71147143 is about 8434.8765847521. The cubic root of 71147143 is about 414.3676303054.

The spelling of 71147143 in words is "seventy-one million, one hundred forty-seven thousand, one hundred forty-three".