42168330 has 64 divisors (see below), whose sum is σ = 119076480. Its totient is φ = 10582272.

The previous prime is 42168317. The next prime is 42168331. The reversal of 42168330 is 3386124.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 42168294 and 42168303.

It is not an unprimeable number, because it can be changed into a prime (42168331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4 + ... + 9183.

It is an arithmetic number, because the mean of its divisors is an integer number (1860570).

Almost surely, 2^42168330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42168330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59538240).

42168330 is an abundant number, since it is smaller than the sum of its proper divisors (76908150).

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

42168330 is a wasteful number, since it uses less digits than its factorization.

42168330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9220 (or 9214 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 42168330 is about 6493.7146534168. The cubic root of 42168330 is about 348.0664260832.

The spelling of 42168330 in words is "forty-two million, one hundred sixty-eight thousand, three hundred thirty".