84271842 has 24 divisors (see below), whose sum is σ = 183309516. Its totient is φ = 27979776.

The previous prime is 84271813. The next prime is 84271853. The reversal of 84271842 is 24817248.

It can be written as a sum of positive squares in 2 ways, for example, as 81378441 + 2893401 = 9021^2 + 1701^2 .

It is a junction number, because it is equal to n+sod(n) for n = 84271797 and 84271806.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4483 + ... + 13734.

Almost surely, 2^84271842 is an apocalyptic number.

84271842 is an abundant number, since it is smaller than the sum of its proper divisors (99037674).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84271842 is a wasteful number, since it uses less digits than its factorization.

84271842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18482 (or 18479 counting only the distinct ones).

The product of its digits is 28672, while the sum is 36.

The square root of 84271842 is about 9179.9696077928. The cubic root of 84271842 is about 438.4238406825.

The spelling of 84271842 in words is "eighty-four million, two hundred seventy-one thousand, eight hundred forty-two".