82123427 has 2 divisors, whose sum is σ = 82123428. Its totient is φ = 82123426.

The previous prime is 82123411. The next prime is 82123439. The reversal of 82123427 is 72432128.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82123427 - 2⁴ = 82123411 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82123427.

It is not a weakly prime, because it can be changed into another prime (82123127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41061713 + 41061714.

It is an arithmetic number, because the mean of its divisors is an integer number (41061714).

Almost surely, 2^82123427 is an apocalyptic number.

82123427 is a deficient number, since it is larger than the sum of its proper divisors (1).

82123427 is an equidigital number, since it uses as much as digits as its factorization.

82123427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 29.

The square root of 82123427 is about 9062.1976915095. The cubic root of 82123427 is about 434.6660174782. Note that the first 3 decimals are identical.

The spelling of 82123427 in words is "eighty-two million, one hundred twenty-three thousand, four hundred twenty-seven".