8123642 has 8 divisors (see below), whose sum is σ = 12253332. Its totient is φ = 4039200.

The previous prime is 8123639. The next prime is 8123657. The reversal of 8123642 is 2463218.

It can be written as a sum of positive squares in 2 ways, for example, as 5202961 + 2920681 = 2281^2 + 1709^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10859 + ... + 11582.

Almost surely, 2^8123642 is an apocalyptic number.

8123642 is a deficient number, since it is larger than the sum of its proper divisors (4129690).

8123642 is a wasteful number, since it uses less digits than its factorization.

8123642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22624.

The product of its digits is 2304, while the sum is 26.

The square root of 8123642 is about 2850.2003438355. The cubic root of 8123642 is about 201.0250870068.

The spelling of 8123642 in words is "eight million, one hundred twenty-three thousand, six hundred forty-two".