42235666 has 16 divisors (see below), whose sum is σ = 69346368. Its totient is φ = 19133200.

The previous prime is 42235663. The next prime is 42235679. The reversal of 42235666 is 66653224.

It is not an unprimeable number, because it can be changed into a prime (42235663) 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, 3756 + ... + 9928.

It is an arithmetic number, because the mean of its divisors is an integer number (4334148).

Almost surely, 2^42235666 is an apocalyptic number.

42235666 is a deficient number, since it is larger than the sum of its proper divisors (27110702).

42235666 is a wasteful number, since it uses less digits than its factorization.

42235666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6497.

The product of its digits is 51840, while the sum is 34.

The square root of 42235666 is about 6498.8972910795. The cubic root of 42235666 is about 348.2515961439.

It can be divided in two parts, 4223 and 5666, that added together give a palindrome (9889).

The spelling of 42235666 in words is "forty-two million, two hundred thirty-five thousand, six hundred sixty-six".