84129530 has 32 divisors (see below), whose sum is σ = 162812160. Its totient is φ = 31199040.

The previous prime is 84129523. The next prime is 84129557. The reversal of 84129530 is 3592148.

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, 4220 + ... + 13640.

It is an arithmetic number, because the mean of its divisors is an integer number (5087880).

Almost surely, 2^84129530 is an apocalyptic number.

84129530 is a deficient number, since it is larger than the sum of its proper divisors (78682630).

84129530 is a wasteful number, since it uses less digits than its factorization.

84129530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9494.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 84129530 is about 9172.2151086856. The cubic root of 84129530 is about 438.1769091387.

The spelling of 84129530 in words is "eighty-four million, one hundred twenty-nine thousand, five hundred thirty".