42224444 has 24 divisors (see below), whose sum is σ = 75734736. Its totient is φ = 20592000.

The previous prime is 42224423. The next prime is 42224453. The reversal of 42224444 is 44442224.

It is a super-2 number, since 2×42224444² = 3565807342218272, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

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, 31304 + ... + 32624.

It is an arithmetic number, because the mean of its divisors is an integer number (3155614).

Almost surely, 2^42224444 is an apocalyptic number.

It is an amenable number.

42224444 is a deficient number, since it is larger than the sum of its proper divisors (33510292).

42224444 is a wasteful number, since it uses less digits than its factorization.

42224444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517 (or 1515 counting only the distinct ones).

The product of its digits is 8192, while the sum is 26.

The square root of 42224444 is about 6498.0338564831. The cubic root of 42224444 is about 348.2207499740.

Adding to 42224444 its reverse (44442224), we get a palindrome (86666668).

The spelling of 42224444 in words is "forty-two million, two hundred twenty-four thousand, four hundred forty-four".