84204129 has 8 divisors (see below), whose sum is σ = 112444672. Its totient is φ = 56049840.

The previous prime is 84204101. The next prime is 84204137. The reversal of 84204129 is 92140248.

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

It is a de Polignac number, because none of the positive numbers 2^k-84204129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 84204096 and 84204105.

It is not an unprimeable number, because it can be changed into a prime (84204229) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 19249 + ... + 23214.

It is an arithmetic number, because the mean of its divisors is an integer number (14055584).

Almost surely, 2^84204129 is an apocalyptic number.

It is an amenable number.

84204129 is a deficient number, since it is larger than the sum of its proper divisors (28240543).

84204129 is a wasteful number, since it uses less digits than its factorization.

84204129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43127.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 84204129 is about 9176.2807825393. The cubic root of 84204129 is about 438.3063837020.

The spelling of 84204129 in words is "eighty-four million, two hundred four thousand, one hundred twenty-nine".