84142238 has 8 divisors (see below), whose sum is σ = 126278832. Its totient is φ = 42049296.

The previous prime is 84142213. The next prime is 84142243. The reversal of 84142238 is 83224148.

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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5570 + ... + 14117.

It is an arithmetic number, because the mean of its divisors is an integer number (15784854).

Almost surely, 2^84142238 is an apocalyptic number.

84142238 is a deficient number, since it is larger than the sum of its proper divisors (42136594).

84142238 is a wasteful number, since it uses less digits than its factorization.

84142238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21826.

The product of its digits is 12288, while the sum is 32.

The square root of 84142238 is about 9172.9078268562. The cubic root of 84142238 is about 438.1989706424.

The spelling of 84142238 in words is "eighty-four million, one hundred forty-two thousand, two hundred thirty-eight".