8421243234 has 16 divisors (see below), whose sum is σ = 16843464000. Its totient is φ = 2806918160.

The previous prime is 8421243223. The next prime is 8421243241. The reversal of 8421243234 is 4323421248.

It is a junction number, because it is equal to n+sod(n) for n = 8421243195 and 8421243204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120139 + ... + 176849.

It is an arithmetic number, because the mean of its divisors is an integer number (1052716500).

Almost surely, 2^8421243234 is an apocalyptic number.

8421243234 is an abundant number, since it is smaller than the sum of its proper divisors (8422220766).

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

8421243234 is a wasteful number, since it uses less digits than its factorization.

8421243234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81465.

The product of its digits is 36864, while the sum is 33.

The square root of 8421243234 is about 91767.3320632130. The cubic root of 8421243234 is about 2034.5048858372.

The spelling of 8421243234 in words is "eight billion, four hundred twenty-one million, two hundred forty-three thousand, two hundred thirty-four".