8660042 has 4 divisors (see below), whose sum is σ = 12990066. Its totient is φ = 4330020.

The previous prime is 8660039. The next prime is 8660051. The reversal of 8660042 is 2400668.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8185321 + 474721 = 2861^2 + 689^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8659993 and 8660020.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2165009 + ... + 2165012.

Almost surely, 2^8660042 is an apocalyptic number.

8660042 is a deficient number, since it is larger than the sum of its proper divisors (4330024).

8660042 is a wasteful number, since it uses less digits than its factorization.

8660042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4330023.

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

The square root of 8660042 is about 2942.7949299943. The cubic root of 8660042 is about 205.3556546778.

The spelling of 8660042 in words is "eight million, six hundred sixty thousand, forty-two".