806123642 has 8 divisors (see below), whose sum is σ = 1261758816. Its totient is φ = 385537372.

The previous prime is 806123627. The next prime is 806123651. The reversal of 806123642 is 246321608.

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

It is a junction number, because it is equal to n+sod(n) for n = 806123599 and 806123608.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8762168 + ... + 8762259.

It is an arithmetic number, because the mean of its divisors is an integer number (157719852).

Almost surely, 2^806123642 is an apocalyptic number.

806123642 is a deficient number, since it is larger than the sum of its proper divisors (455635174).

806123642 is a wasteful number, since it uses less digits than its factorization.

806123642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17524452.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 806123642 is about 28392.3166015033. The cubic root of 806123642 is about 930.6803677471.

The spelling of 806123642 in words is "eight hundred six million, one hundred twenty-three thousand, six hundred forty-two".