42224985 has 24 divisors (see below), whose sum is σ = 79844544. Its totient is φ = 20472480.

The previous prime is 42224933. The next prime is 42224989. The reversal of 42224985 is 58942224.

It is not a de Polignac number, because 42224985 - 2⁷ = 42224857 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42224989) 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 23 ways as a sum of consecutive naturals, for example, 42157 + ... + 43146.

It is an arithmetic number, because the mean of its divisors is an integer number (3326856).

Almost surely, 2^42224985 is an apocalyptic number.

42224985 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42224985 is a deficient number, since it is larger than the sum of its proper divisors (37619559).

42224985 is a wasteful number, since it uses less digits than its factorization.

42224985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85325 (or 85322 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 42224985 is about 6498.0754843261. The cubic root of 42224985 is about 348.2222371585. Note that the first 4 decimals are identical.

The spelling of 42224985 in words is "forty-two million, two hundred twenty-four thousand, nine hundred eighty-five".