80842243 has 2 divisors, whose sum is σ = 80842244. Its totient is φ = 80842242.

The previous prime is 80842199. The next prime is 80842247. The reversal of 80842243 is 34224808.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80842243 - 2²⁵ = 47287811 is a prime.

It is not a weakly prime, because it can be changed into another prime (80842247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40421121 + 40421122.

It is an arithmetic number, because the mean of its divisors is an integer number (40421122).

Almost surely, 2^80842243 is an apocalyptic number.

80842243 is a deficient number, since it is larger than the sum of its proper divisors (1).

80842243 is an equidigital number, since it uses as much as digits as its factorization.

80842243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12288, while the sum is 31.

The square root of 80842243 is about 8991.2314506968. The cubic root of 80842243 is about 432.3937935169.

The spelling of 80842243 in words is "eighty million, eight hundred forty-two thousand, two hundred forty-three".