84210540290 has 8 divisors (see below), whose sum is σ = 151578972540. Its totient is φ = 33684216112.

The previous prime is 84210540277. The next prime is 84210540301. The reversal of 84210540290 is 9204501248.

It can be written as a sum of positive squares in 2 ways, for example, as 84022877689 + 187662601 = 289867^2 + 13699^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 84210540290.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4210527005 + ... + 4210527024.

Almost surely, 2^84210540290 is an apocalyptic number.

84210540290 is a deficient number, since it is larger than the sum of its proper divisors (67368432250).

84210540290 is a wasteful number, since it uses less digits than its factorization.

84210540290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8421054036.

The product of its (nonzero) digits is 23040, while the sum is 35.

The spelling of 84210540290 in words is "eighty-four billion, two hundred ten million, five hundred forty thousand, two hundred ninety".