80434021 has 8 divisors (see below), whose sum is σ = 85264704. Its totient is φ = 75614400.

The previous prime is 80434007. The next prime is 80434027. The reversal of 80434021 is 12043408.

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

It is a cyclic number.

It is not a de Polignac number, because 80434021 - 2⁵ = 80433989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80433983 and 80434001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80434027) 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, 15846 + ... + 20296.

It is an arithmetic number, because the mean of its divisors is an integer number (10658088).

Almost surely, 2^80434021 is an apocalyptic number.

It is an amenable number.

80434021 is a deficient number, since it is larger than the sum of its proper divisors (4830683).

80434021 is a wasteful number, since it uses less digits than its factorization.

80434021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5531.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 80434021 is about 8968.5016028320. The cubic root of 80434021 is about 431.6647579873.

Adding to 80434021 its reverse (12043408), we get a palindrome (92477429).

It can be divided in two parts, 8043 and 4021, that multiplied together give a triangular number (32340903 = T₈₀₄₂).

The spelling of 80434021 in words is "eighty million, four hundred thirty-four thousand, twenty-one".