84542238 has 32 divisors (see below), whose sum is σ = 204952320. Its totient is φ = 25618680.

The previous prime is 84542209. The next prime is 84542243. The reversal of 84542238 is 83224548.

84542238 is a `hidden beast` number, since 84 + 542 + 2 + 38 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70570 + ... + 71757.

It is an arithmetic number, because the mean of its divisors is an integer number (6404760).

Almost surely, 2^84542238 is an apocalyptic number.

84542238 is an abundant number, since it is smaller than the sum of its proper divisors (120410082).

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

84542238 is a wasteful number, since it uses less digits than its factorization.

84542238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142349 (or 142343 counting only the distinct ones).

The product of its digits is 61440, while the sum is 36.

The square root of 84542238 is about 9194.6853127228. The cubic root of 84542238 is about 438.8922513395.

The spelling of 84542238 in words is "eighty-four million, five hundred forty-two thousand, two hundred thirty-eight".