8471420442 has 12 divisors (see below), whose sum is σ = 18354744330. Its totient is φ = 2823806808.

The previous prime is 8471420431. The next prime is 8471420449. The reversal of 8471420442 is 2440241748.

It can be written as a sum of positive squares in only one way, i.e., 6240842001 + 2230578441 = 78999^2 + 47229^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8471420397 and 8471420406.

It is not an unprimeable number, because it can be changed into a prime (8471420449) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 235317217 + ... + 235317252.

Almost surely, 2^8471420442 is an apocalyptic number.

8471420442 is an abundant number, since it is smaller than the sum of its proper divisors (9883323888).

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

8471420442 is a wasteful number, since it uses less digits than its factorization.

8471420442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470634477 (or 470634474 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 36.

The square root of 8471420442 is about 92040.3196539430. The cubic root of 8471420442 is about 2038.5376905061.

The spelling of 8471420442 in words is "eight billion, four hundred seventy-one million, four hundred twenty thousand, four hundred forty-two".