84155742 has 36 divisors (see below), whose sum is σ = 200425680. Its totient is φ = 25501080.

The previous prime is 84155741. The next prime is 84155749. The reversal of 84155742 is 24755148.

84155742 is a `hidden beast` number, since 84 + 1 + 5 + 574 + 2 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 84155697 and 84155706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84155741) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 17142 + ... + 21497.

It is an arithmetic number, because the mean of its divisors is an integer number (5567380).

Almost surely, 2^84155742 is an apocalyptic number.

84155742 is an abundant number, since it is smaller than the sum of its proper divisors (116269938).

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

84155742 is a wasteful number, since it uses less digits than its factorization.

84155742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38669 (or 38655 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 84155742 is about 9173.6438779800. The cubic root of 84155742 is about 438.2224115939. Note that the first 3 decimals are identical.

The spelling of 84155742 in words is "eighty-four million, one hundred fifty-five thousand, seven hundred forty-two".