42422985 has 24 divisors (see below), whose sum is σ = 80218944. Its totient is φ = 20568480.

The previous prime is 42422981. The next prime is 42423011. The reversal of 42422985 is 58922424.

42422985 is a `hidden beast` number, since 424 + 229 + 8 + 5 = 666.

It is not a de Polignac number, because 42422985 - 2² = 42422981 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (42422981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42357 + ... + 43346.

It is an arithmetic number, because the mean of its divisors is an integer number (3342456).

Almost surely, 2^42422985 is an apocalyptic number.

42422985 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42422985 is a deficient number, since it is larger than the sum of its proper divisors (37795959).

42422985 is a wasteful number, since it uses less digits than its factorization.

42422985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85725 (or 85722 counting only the distinct ones).

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

The square root of 42422985 is about 6513.2929459683. The cubic root of 42422985 is about 348.7656793351.

It can be divided in two parts, 4242 and 2985, that added together give a palindrome (7227).

The spelling of 42422985 in words is "forty-two million, four hundred twenty-two thousand, nine hundred eighty-five".