42258666 has 16 divisors (see below), whose sum is σ = 84600000. Its totient is φ = 14072448.

The previous prime is 42258661. The next prime is 42258721. The reversal of 42258666 is 66685224.

It is not an unprimeable number, because it can be changed into a prime (42258661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4675 + ... + 10313.

It is an arithmetic number, because the mean of its divisors is an integer number (5287500).

Almost surely, 2^42258666 is an apocalyptic number.

42258666 is an abundant number, since it is smaller than the sum of its proper divisors (42341334).

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

42258666 is a wasteful number, since it uses less digits than its factorization.

42258666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6893.

The product of its digits is 138240, while the sum is 39.

The square root of 42258666 is about 6500.6665812053. Note that the first 3 decimals coincide. The cubic root of 42258666 is about 348.3147997027.

It can be divided in two parts, 42258 and 666, that added together give a palindrome (42924).

The spelling of 42258666 in words is "forty-two million, two hundred fifty-eight thousand, six hundred sixty-six".