42170022 has 12 divisors (see below), whose sum is σ = 91368420. Its totient is φ = 14056668.

The previous prime is 42170021. The next prime is 42170027. The reversal of 42170022 is 22007124.

42170022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 2342779 = 42170022 / (4 + 2 + 1 + 7 + 0 + 0 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 42169977 and 42170004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42170021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1171372 + ... + 1171407.

It is an arithmetic number, because the mean of its divisors is an integer number (7614035).

Almost surely, 2^42170022 is an apocalyptic number.

42170022 is an abundant number, since it is smaller than the sum of its proper divisors (49198398).

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

42170022 is a wasteful number, since it uses less digits than its factorization.

42170022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2342787 (or 2342784 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 42170022 is about 6493.8449319336. The cubic root of 42170022 is about 348.0710813977.

Adding to 42170022 its reverse (22007124), we get a palindrome (64177146).

The spelling of 42170022 in words is "forty-two million, one hundred seventy thousand, twenty-two".