71250043 has 4 divisors (see below), whose sum is σ = 75441240. Its totient is φ = 67058848.

The previous prime is 71250041. The next prime is 71250083. The reversal of 71250043 is 34005217.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34005217 = 43 ⋅790819.

It is a cyclic number.

It is not a de Polignac number, because 71250043 - 2¹ = 71250041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71249996 and 71250023.

It is not an unprimeable number, because it can be changed into a prime (71250041) 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, 2095573 + ... + 2095606.

It is an arithmetic number, because the mean of its divisors is an integer number (18860310).

Almost surely, 2^71250043 is an apocalyptic number.

71250043 is a deficient number, since it is larger than the sum of its proper divisors (4191197).

71250043 is a wasteful number, since it uses less digits than its factorization.

71250043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4191196.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 71250043 is about 8440.9740551669. The cubic root of 71250043 is about 414.5673004908.

The spelling of 71250043 in words is "seventy-one million, two hundred fifty thousand, forty-three".