80421081 has 16 divisors (see below), whose sum is σ = 115639104. Its totient is φ = 49420224.

The previous prime is 80421079. The next prime is 80421097. The reversal of 80421081 is 18012408.

It is not a de Polignac number, because 80421081 - 2¹ = 80421079 is a prime.

It is a super-2 number, since 2×80421081² = 12935100538417122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80423081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47410 + ... + 49076.

It is an arithmetic number, because the mean of its divisors is an integer number (7227444).

Almost surely, 2^80421081 is an apocalyptic number.

It is an amenable number.

80421081 is a deficient number, since it is larger than the sum of its proper divisors (35218023).

80421081 is a wasteful number, since it uses less digits than its factorization.

80421081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2920.

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 80421081 is about 8967.7801601065. The cubic root of 80421081 is about 431.6416084068.

Adding to 80421081 its reverse (18012408), we get a palindrome (98433489).

The spelling of 80421081 in words is "eighty million, four hundred twenty-one thousand, eighty-one".