84219742 has 8 divisors (see below), whose sum is σ = 132978600. Its totient is φ = 39893544.

The previous prime is 84219719. The next prime is 84219743. The reversal of 84219742 is 24791248.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84219743) 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 3 ways as a sum of consecutive naturals, for example, 1108117 + ... + 1108192.

It is an arithmetic number, because the mean of its divisors is an integer number (16622325).

Almost surely, 2^84219742 is an apocalyptic number.

84219742 is a deficient number, since it is larger than the sum of its proper divisors (48758858).

84219742 is a wasteful number, since it uses less digits than its factorization.

84219742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2216330.

The product of its digits is 32256, while the sum is 37.

The square root of 84219742 is about 9177.1314690376. The cubic root of 84219742 is about 438.3334720595. Note that the first 3 decimals are identical.

The spelling of 84219742 in words is "eighty-four million, two hundred nineteen thousand, seven hundred forty-two".