84134172 has 12 divisors (see below), whose sum is σ = 196313096. Its totient is φ = 28044720.

The previous prime is 84134159. The next prime is 84134221. The reversal of 84134172 is 27143148.

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

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, 3505579 + ... + 3505602.

Almost surely, 2^84134172 is an apocalyptic number.

It is an amenable number.

84134172 is an abundant number, since it is smaller than the sum of its proper divisors (112178924).

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

84134172 is a wasteful number, since it uses less digits than its factorization.

84134172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7011188 (or 7011186 counting only the distinct ones).

The product of its digits is 5376, while the sum is 30.

The square root of 84134172 is about 9172.4681520297. The cubic root of 84134172 is about 438.1849680601.

The spelling of 84134172 in words is "eighty-four million, one hundred thirty-four thousand, one hundred seventy-two".