84243742 has 16 divisors (see below), whose sum is σ = 138910464. Its totient is φ = 37999000.

The previous prime is 84243727. The next prime is 84243767. The reversal of 84243742 is 24734248.

It is a junction number, because it is equal to n+sod(n) for n = 84243698 and 84243707.

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 7 ways as a sum of consecutive naturals, for example, 11734 + ... + 17497.

It is an arithmetic number, because the mean of its divisors is an integer number (8681904).

Almost surely, 2^84243742 is an apocalyptic number.

84243742 is a deficient number, since it is larger than the sum of its proper divisors (54666722).

84243742 is a wasteful number, since it uses less digits than its factorization.

84243742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29375.

The product of its digits is 43008, while the sum is 34.

The square root of 84243742 is about 9178.4389740304. The cubic root of 84243742 is about 438.3751052283.

The spelling of 84243742 in words is "eighty-four million, two hundred forty-three thousand, seven hundred forty-two".