84890142 has 24 divisors (see below), whose sum is σ = 184280616. Its totient is φ = 28242576.

The previous prime is 84890137. The next prime is 84890207. The reversal of 84890142 is 24109848.

It is a junction number, because it is equal to n+sod(n) for n = 84890097 and 84890106.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 5793 + ... + 14259.

It is an arithmetic number, because the mean of its divisors is an integer number (7678359).

Almost surely, 2^84890142 is an apocalyptic number.

84890142 is an abundant number, since it is smaller than the sum of its proper divisors (99390474).

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

84890142 is a wasteful number, since it uses less digits than its factorization.

84890142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9032 (or 9029 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 84890142 is about 9213.5846444259. The cubic root of 84890142 is about 439.4934632318.

The spelling of 84890142 in words is "eighty-four million, eight hundred ninety thousand, one hundred forty-two".