42226644 has 12 divisors (see below), whose sum is σ = 98528864. Its totient is φ = 14075544.

The previous prime is 42226627. The next prime is 42226649. The reversal of 42226644 is 44662224.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42226649) 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 3 ways as a sum of consecutive naturals, for example, 1759432 + ... + 1759455.

Almost surely, 2^42226644 is an apocalyptic number.

It is an amenable number.

42226644 is an abundant number, since it is smaller than the sum of its proper divisors (56302220).

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

42226644 is a wasteful number, since it uses less digits than its factorization.

42226644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3518894 (or 3518892 counting only the distinct ones).

The product of its digits is 18432, while the sum is 30.

The square root of 42226644 is about 6498.2031362524. The cubic root of 42226644 is about 348.2267975953.

Adding to 42226644 its reverse (44662224), we get a palindrome (86888868).

The spelling of 42226644 in words is "forty-two million, two hundred twenty-six thousand, six hundred forty-four".