80421271 has 16 divisors (see below), whose sum is σ = 101551104. Its totient is φ = 62054784.

The previous prime is 80421269. The next prime is 80421283. The reversal of 80421271 is 17212408.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 80421271 - 2¹ = 80421269 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 (80421571) 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 15 ways as a sum of consecutive naturals, for example, 11955 + ... + 17428.

It is an arithmetic number, because the mean of its divisors is an integer number (6346944).

Almost surely, 2^80421271 is an apocalyptic number.

80421271 is a deficient number, since it is larger than the sum of its proper divisors (21129833).

80421271 is a wasteful number, since it uses less digits than its factorization.

80421271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29430.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 80421271 is about 8967.7907535803. The cubic root of 80421271 is about 431.6419483336.

Adding to 80421271 its reverse (17212408), we get a palindrome (97633679).

The spelling of 80421271 in words is "eighty million, four hundred twenty-one thousand, two hundred seventy-one".