71444143 has 4 divisors (see below), whose sum is σ = 71488768. Its totient is φ = 71399520.

The previous prime is 71444101. The next prime is 71444147. The reversal of 71444143 is 34144417.

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 71444143 - 2²⁵ = 37889711 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 (71444147) 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, 19818 + ... + 23143.

It is an arithmetic number, because the mean of its divisors is an integer number (17872192).

Almost surely, 2^71444143 is an apocalyptic number.

71444143 is a deficient number, since it is larger than the sum of its proper divisors (44625).

71444143 is a wasteful number, since it uses less digits than its factorization.

71444143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44624.

The product of its digits is 5376, while the sum is 28.

The square root of 71444143 is about 8452.4637236725. The cubic root of 71444143 is about 414.9434151331.

It can be divided in two parts, 7144414 and 3, that added together give a palindrome (7144417).

The spelling of 71444143 in words is "seventy-one million, four hundred forty-four thousand, one hundred forty-three".