84243128 has 32 divisors (see below), whose sum is σ = 160866000. Its totient is φ = 41352960.

The previous prime is 84243119. The next prime is 84243139. The reversal of 84243128 is 82134248.

It is a junction number, because it is equal to n+sod(n) for n = 84243094 and 84243103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127118 + ... + 127778.

Almost surely, 2^84243128 is an apocalyptic number.

It is an amenable number.

84243128 is a deficient number, since it is larger than the sum of its proper divisors (76622872).

84243128 is a wasteful number, since it uses less digits than its factorization.

84243128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935 (or 931 counting only the distinct ones).

The product of its digits is 12288, while the sum is 32.

The square root of 84243128 is about 9178.4055260159. The cubic root of 84243128 is about 438.3740402116.

The spelling of 84243128 in words is "eighty-four million, two hundred forty-three thousand, one hundred twenty-eight".