42422785 has 8 divisors (see below), whose sum is σ = 50967720. Its totient is φ = 33897984.

The previous prime is 42422777. The next prime is 42422789. The reversal of 42422785 is 58722424.

It can be written as a sum of positive squares in 4 ways, for example, as 1065024 + 41357761 = 1032^2 + 6431^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42422785 - 2³ = 42422777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42422785.

It is not an unprimeable number, because it can be changed into a prime (42422789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79 + ... + 9211.

It is an arithmetic number, because the mean of its divisors is an integer number (6370965).

Almost surely, 2^42422785 is an apocalyptic number.

It is an amenable number.

42422785 is a deficient number, since it is larger than the sum of its proper divisors (8544935).

42422785 is an equidigital number, since it uses as much as digits as its factorization.

42422785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10067.

The product of its digits is 35840, while the sum is 34.

The square root of 42422785 is about 6513.2775927332. The cubic root of 42422785 is about 348.7651312577.

The spelling of 42422785 in words is "forty-two million, four hundred twenty-two thousand, seven hundred eighty-five".