42165222 has 32 divisors (see below), whose sum is σ = 92340864. Its totient is φ = 12729600.

The previous prime is 42165197. The next prime is 42165229. The reversal of 42165222 is 22256124.

42165222 = T₈₇₃ + T₈₇₄ + ... + T₉₇₁.

It is a happy number.

42165222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 42165192 and 42165201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42165229) 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 15 ways as a sum of consecutive naturals, for example, 19222 + ... + 21302.

It is an arithmetic number, because the mean of its divisors is an integer number (2885652).

Almost surely, 2^42165222 is an apocalyptic number.

42165222 is an abundant number, since it is smaller than the sum of its proper divisors (50175642).

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

42165222 is a wasteful number, since it uses less digits than its factorization.

42165222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2404.

The product of its digits is 1920, while the sum is 24.

The square root of 42165222 is about 6493.4753406785. The cubic root of 42165222 is about 348.0578745072.

The spelling of 42165222 in words is "forty-two million, one hundred sixty-five thousand, two hundred twenty-two".