80412421 has 4 divisors (see below), whose sum is σ = 80461612. Its totient is φ = 80363232.

The previous prime is 80412413. The next prime is 80412443. The reversal of 80412421 is 12421408.

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

It can be written as a sum of positive squares in 2 ways, for example, as 55800900 + 24611521 = 7470^2 + 4961^2 .

It is a cyclic number.

It is not a de Polignac number, because 80412421 - 2³ = 80412413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80412392 and 80412401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80412121) 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, 22056 + ... + 25441.

It is an arithmetic number, because the mean of its divisors is an integer number (20115403).

Almost surely, 2^80412421 is an apocalyptic number.

It is an amenable number.

80412421 is a deficient number, since it is larger than the sum of its proper divisors (49191).

80412421 is a wasteful number, since it uses less digits than its factorization.

80412421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49190.

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 80412421 is about 8967.2973074388. The cubic root of 80412421 is about 431.6261143329.

Adding to 80412421 its reverse (12421408), we get a palindrome (92833829).

It can be divided in two parts, 804 and 12421, that added together give a square (13225 = 115²).

The spelling of 80412421 in words is "eighty million, four hundred twelve thousand, four hundred twenty-one".