84122419 has 2 divisors, whose sum is σ = 84122420. Its totient is φ = 84122418.

The previous prime is 84122393. The next prime is 84122429. The reversal of 84122419 is 91422148.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84122419 - 2⁹ = 84121907 is a prime.

It is a super-2 number, since 2×84122419² = 14153162756823122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (84122429) 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, 42061209 + 42061210.

It is an arithmetic number, because the mean of its divisors is an integer number (42061210).

Almost surely, 2^84122419 is an apocalyptic number.

84122419 is a deficient number, since it is larger than the sum of its proper divisors (1).

84122419 is an equidigital number, since it uses as much as digits as its factorization.

84122419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 31.

The square root of 84122419 is about 9171.8274623981. The cubic root of 84122419 is about 438.1645632407.

The spelling of 84122419 in words is "eighty-four million, one hundred twenty-two thousand, four hundred nineteen".