71424291 has 4 divisors (see below), whose sum is σ = 95232392. Its totient is φ = 47616192.

The previous prime is 71424289. The next prime is 71424313. The reversal of 71424291 is 19242417.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 71424291 - 2¹ = 71424289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71424251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11904046 + ... + 11904051.

It is an arithmetic number, because the mean of its divisors is an integer number (23808098).

Almost surely, 2^71424291 is an apocalyptic number.

71424291 is a deficient number, since it is larger than the sum of its proper divisors (23808101).

71424291 is a wasteful number, since it uses less digits than its factorization.

71424291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23808100.

The product of its digits is 4032, while the sum is 30.

The square root of 71424291 is about 8451.2893099219. The cubic root of 71424291 is about 414.9049784868.

The spelling of 71424291 in words is "seventy-one million, four hundred twenty-four thousand, two hundred ninety-one".