71042943 has 8 divisors (see below), whose sum is σ = 96021808. Its totient is φ = 46713024.

The previous prime is 71042893. The next prime is 71042963. The reversal of 71042943 is 34924017.

It is a happy number.

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

It is not a de Polignac number, because 71042943 - 2⁶ = 71042879 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71042943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71042963) 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, 161980 + ... + 162417.

It is an arithmetic number, because the mean of its divisors is an integer number (12002726).

Almost surely, 2^71042943 is an apocalyptic number.

71042943 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

71042943 is a deficient number, since it is larger than the sum of its proper divisors (24978865).

71042943 is a wasteful number, since it uses less digits than its factorization.

71042943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324473.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 71042943 is about 8428.6975862229. The cubic root of 71042943 is about 414.1652412796.

The spelling of 71042943 in words is "seventy-one million, forty-two thousand, nine hundred forty-three".