42353866 has 4 divisors (see below), whose sum is σ = 63530802. Its totient is φ = 21176932.

The previous prime is 42353813. The next prime is 42353867. The reversal of 42353866 is 66835324.

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., 31979025 + 10374841 = 5655^2 + 3221^2 .

It is not an unprimeable number, because it can be changed into a prime (42353867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10588465 + ... + 10588468.

Almost surely, 2^42353866 is an apocalyptic number.

42353866 is a deficient number, since it is larger than the sum of its proper divisors (21176936).

42353866 is a wasteful number, since it uses less digits than its factorization.

42353866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21176935.

The product of its digits is 103680, while the sum is 37.

The square root of 42353866 is about 6507.9847879355. The cubic root of 42353866 is about 348.5761638413.

It can be divided in two parts, 423 and 53866, that added together give a square (54289 = 233²).

The spelling of 42353866 in words is "forty-two million, three hundred fifty-three thousand, eight hundred sixty-six".