71121043 has 8 divisors (see below), whose sum is σ = 81444960. Its totient is φ = 60838080.

The previous prime is 71121031. The next prime is 71121049. The reversal of 71121043 is 34012117.

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 71121043 - 2¹³ = 71112851 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 71121043.

It is not an unprimeable number, because it can be changed into a prime (71121049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6418 + ... + 13543.

It is an arithmetic number, because the mean of its divisors is an integer number (10180620).

Almost surely, 2^71121043 is an apocalyptic number.

71121043 is a deficient number, since it is larger than the sum of its proper divisors (10323917).

71121043 is a wasteful number, since it uses less digits than its factorization.

71121043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20477.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 71121043 is about 8433.3292951242. The cubic root of 71121043 is about 414.3169544926.

The spelling of 71121043 in words is "seventy-one million, one hundred twenty-one thousand, forty-three".