84129502 has 4 divisors (see below), whose sum is σ = 126194256. Its totient is φ = 42064750.

The previous prime is 84129491. The next prime is 84129509. The reversal of 84129502 is 20592148.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84129509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21032374 + ... + 21032377.

It is an arithmetic number, because the mean of its divisors is an integer number (31548564).

Almost surely, 2^84129502 is an apocalyptic number.

84129502 is a deficient number, since it is larger than the sum of its proper divisors (42064754).

84129502 is a wasteful number, since it uses less digits than its factorization.

84129502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42064753.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 84129502 is about 9172.2135823366. The cubic root of 84129502 is about 438.1768605273.

The spelling of 84129502 in words is "eighty-four million, one hundred twenty-nine thousand, five hundred two".