80421 has 8 divisors (see below), whose sum is σ = 117024. Its totient is φ = 48720.

The previous prime is 80407. The next prime is 80429. The reversal of 80421 is 12408.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80421 - 2¹⁰ = 79397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1186 + ... + 1251.

It is an arithmetic number, because the mean of its divisors is an integer number (14628).

2⁸⁰⁴²¹ is an apocalyptic number.

It is an amenable number.

80421 is a deficient number, since it is larger than the sum of its proper divisors (36603).

80421 is a wasteful number, since it uses less digits than its factorization.

80421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 80421 is about 283.5859658023. The cubic root of 80421 is about 43.1641463490.

Adding to 80421 its reverse (12408), we get a palindrome (92829).

The spelling of 80421 in words is "eighty thousand, four hundred twenty-one".