42237666 has 32 divisors (see below), whose sum is σ = 95059200. Its totient is φ = 13899600.

The previous prime is 42237641. The next prime is 42237677. The reversal of 42237666 is 66673224.

It is a happy number.

42237666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 42237666.

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 15 ways as a sum of consecutive naturals, for example, 685 + ... + 9216.

It is an arithmetic number, because the mean of its divisors is an integer number (2970600).

Almost surely, 2^42237666 is an apocalyptic number.

42237666 is an abundant number, since it is smaller than the sum of its proper divisors (52821534).

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

42237666 is a wasteful number, since it uses less digits than its factorization.

42237666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9991 (or 9985 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 42237666 is about 6499.0511615158. The cubic root of 42237666 is about 348.2570930163.

It can be divided in two parts, 4 and 2237666, that added together give a triangular number (2237670 = T₂₁₁₅).

The spelling of 42237666 in words is "forty-two million, two hundred thirty-seven thousand, six hundred sixty-six".