42220244 has 24 divisors (see below), whose sum is σ = 80790528. Its totient is φ = 19146240.

The previous prime is 42220237. The next prime is 42220247. The reversal of 42220244 is 44202224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42220247) 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, 24557 + ... + 26219.

It is an arithmetic number, because the mean of its divisors is an integer number (3366272).

Almost surely, 2^42220244 is an apocalyptic number.

42220244 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

42220244 is a deficient number, since it is larger than the sum of its proper divisors (38570284).

42220244 is a wasteful number, since it uses less digits than its factorization.

42220244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2255 (or 2253 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 42220244 is about 6497.7106737681. The cubic root of 42220244 is about 348.2092039317.

Adding to 42220244 its reverse (44202224), we get a palindrome (86422468).

The spelling of 42220244 in words is "forty-two million, two hundred twenty thousand, two hundred forty-four".