42224440 has 16 divisors (see below), whose sum is σ = 95005080. Its totient is φ = 16889760.

The previous prime is 42224423. The next prime is 42224453. The reversal of 42224440 is 4442224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 527766 + ... + 527845.

Almost surely, 2^42224440 is an apocalyptic number.

42224440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42224440 is an abundant number, since it is smaller than the sum of its proper divisors (52780640).

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

42224440 is a wasteful number, since it uses less digits than its factorization.

42224440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055622 (or 1055618 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 42224440 is about 6498.0335486976. The cubic root of 42224440 is about 348.2207389781.

Adding to 42224440 its reverse (4442224), we get a palindrome (46666664).

The spelling of 42224440 in words is "forty-two million, two hundred twenty-four thousand, four hundred forty".