84142236 has 12 divisors (see below), whose sum is σ = 196331912. Its totient is φ = 28047408.

The previous prime is 84142213. The next prime is 84142243. The reversal of 84142236 is 63224148.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3505915 + ... + 3505938.

Almost surely, 2^84142236 is an apocalyptic number.

It is an amenable number.

84142236 is an abundant number, since it is smaller than the sum of its proper divisors (112189676).

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

84142236 is a wasteful number, since it uses less digits than its factorization.

84142236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7011860 (or 7011858 counting only the distinct ones).

The product of its digits is 9216, while the sum is 30.

The square root of 84142236 is about 9172.9077178395. The cubic root of 84142236 is about 438.1989671705.

The spelling of 84142236 in words is "eighty-four million, one hundred forty-two thousand, two hundred thirty-six".