84242117 has 8 divisors (see below), whose sum is σ = 86332224. Its totient is φ = 82158048.

The previous prime is 84242113. The next prime is 84242141. The reversal of 84242117 is 71124248.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84242117 - 2² = 84242113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84242117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84242111) 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 in 7 ways as a sum of consecutive naturals, for example, 41273 + ... + 43265.

It is an arithmetic number, because the mean of its divisors is an integer number (10791528).

Almost surely, 2^84242117 is an apocalyptic number.

It is an amenable number.

84242117 is a deficient number, since it is larger than the sum of its proper divisors (2090107).

84242117 is a wasteful number, since it uses less digits than its factorization.

84242117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3019.

The product of its digits is 3584, while the sum is 29.

The square root of 84242117 is about 9178.3504509253. The cubic root of 84242117 is about 438.3722865654.

The spelling of 84242117 in words is "eighty-four million, two hundred forty-two thousand, one hundred seventeen".