82126469 has 2 divisors, whose sum is σ = 82126470. Its totient is φ = 82126468.

The previous prime is 82126427. The next prime is 82126487. The reversal of 82126469 is 96462128.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80317444 + 1809025 = 8962^2 + 1345^2 .

It is a cyclic number.

It is not a de Polignac number, because 82126469 - 2¹² = 82122373 is a prime.

It is a super-2 number, since 2×82126469² = 13489513820815922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82126669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41063234 + 41063235.

It is an arithmetic number, because the mean of its divisors is an integer number (41063235).

Almost surely, 2^82126469 is an apocalyptic number.

It is an amenable number.

82126469 is a deficient number, since it is larger than the sum of its proper divisors (1).

82126469 is an equidigital number, since it uses as much as digits as its factorization.

82126469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 38.

The square root of 82126469 is about 9062.3655300368. The cubic root of 82126469 is about 434.6713843499.

The spelling of 82126469 in words is "eighty-two million, one hundred twenty-six thousand, four hundred sixty-nine".