42786668 has 6 divisors (see below), whose sum is σ = 74876676. Its totient is φ = 21393332.

The previous prime is 42786649. The next prime is 42786673. The reversal of 42786668 is 86668724.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5348330 + ... + 5348337.

It is an arithmetic number, because the mean of its divisors is an integer number (12479446).

Almost surely, 2^42786668 is an apocalyptic number.

It is an amenable number.

42786668 is a deficient number, since it is larger than the sum of its proper divisors (32090008).

42786668 is a wasteful number, since it uses less digits than its factorization.

42786668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10696671 (or 10696669 counting only the distinct ones).

The product of its digits is 774144, while the sum is 47.

The square root of 42786668 is about 6541.1518863271. The cubic root of 42786668 is about 349.7594755627.

The spelling of 42786668 in words is "forty-two million, seven hundred eighty-six thousand, six hundred sixty-eight".