84905742102 has 64 divisors (see below), whose sum is σ = 174231233280. Its totient is φ = 27573436800.

The previous prime is 84905742067. The next prime is 84905742107. The reversal of 84905742102 is 20124750948.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84905742107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36298849 + ... + 36301187.

It is an arithmetic number, because the mean of its divisors is an integer number (2722363020).

Almost surely, 2^84905742102 is an apocalyptic number.

84905742102 is an abundant number, since it is smaller than the sum of its proper divisors (89325491178).

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

84905742102 is a wasteful number, since it uses less digits than its factorization.

84905742102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3149.

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 84905742102 in words is "eighty-four billion, nine hundred five million, seven hundred forty-two thousand, one hundred two".