84122543 has 2 divisors, whose sum is σ = 84122544. Its totient is φ = 84122542.

The previous prime is 84122531. The next prime is 84122581. The reversal of 84122543 is 34522148.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84122543 - 2¹⁴ = 84106159 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84122593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42061271 + 42061272.

It is an arithmetic number, because the mean of its divisors is an integer number (42061272).

Almost surely, 2^84122543 is an apocalyptic number.

84122543 is a deficient number, since it is larger than the sum of its proper divisors (1).

84122543 is an equidigital number, since it uses as much as digits as its factorization.

84122543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 29.

The square root of 84122543 is about 9171.8342222262. The cubic root of 84122543 is about 438.1647785316.

The spelling of 84122543 in words is "eighty-four million, one hundred twenty-two thousand, five hundred forty-three".