84042542 has 8 divisors (see below), whose sum is σ = 126615000. Its totient is φ = 41837544.

The previous prime is 84042527. The next prime is 84042613. The reversal of 84042542 is 24524048.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91292 + ... + 92207.

It is an arithmetic number, because the mean of its divisors is an integer number (15826875).

Almost surely, 2^84042542 is an apocalyptic number.

84042542 is a deficient number, since it is larger than the sum of its proper divisors (42572458).

84042542 is a wasteful number, since it uses less digits than its factorization.

84042542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183730.

The product of its (nonzero) digits is 10240, while the sum is 29.

The square root of 84042542 is about 9167.4719525069. The cubic root of 84042542 is about 438.0258354408.

The spelling of 84042542 in words is "eighty-four million, forty-two thousand, five hundred forty-two".