82840123 has 2 divisors, whose sum is σ = 82840124. Its totient is φ = 82840122.

The previous prime is 82840103. The next prime is 82840129. The reversal of 82840123 is 32104828.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82840123 - 2⁹ = 82839611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 82840091 and 82840100.

It is not a weakly prime, because it can be changed into another prime (82840129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41420061 + 41420062.

It is an arithmetic number, because the mean of its divisors is an integer number (41420062).

Almost surely, 2^82840123 is an apocalyptic number.

82840123 is a deficient number, since it is larger than the sum of its proper divisors (1).

82840123 is an equidigital number, since it uses as much as digits as its factorization.

82840123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 82840123 is about 9101.6549594016. The cubic root of 82840123 is about 435.9268088992.

The spelling of 82840123 in words is "eighty-two million, eight hundred forty thousand, one hundred twenty-three".