84228842 has 8 divisors (see below), whose sum is σ = 129424932. Its totient is φ = 41087200.

The previous prime is 84228839. The next prime is 84228889. The reversal of 84228842 is 24882248.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 57592921 + 26635921 = 7589^2 + 5161^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 84228796 and 84228805.

It is an unprimeable number.

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, 513509 + ... + 513672.

Almost surely, 2^84228842 is an apocalyptic number.

84228842 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

84228842 is a deficient number, since it is larger than the sum of its proper divisors (45196090).

84228842 is a wasteful number, since it uses less digits than its factorization.

84228842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027224.

The product of its digits is 65536, while the sum is 38.

The square root of 84228842 is about 9177.6272532719. The cubic root of 84228842 is about 438.3492589002.

The spelling of 84228842 in words is "eighty-four million, two hundred twenty-eight thousand, eight hundred forty-two".