42189042 has 16 divisors (see below), whose sum is σ = 96432192. Its totient is φ = 12054000.

The previous prime is 42188989. The next prime is 42189067. The reversal of 42189042 is 24098124.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 502209 + ... + 502292.

It is an arithmetic number, because the mean of its divisors is an integer number (6027012).

Almost surely, 2^42189042 is an apocalyptic number.

42189042 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

42189042 is an abundant number, since it is smaller than the sum of its proper divisors (54243150).

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

42189042 is a wasteful number, since it uses less digits than its factorization.

42189042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004513.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 42189042 is about 6495.3092305140. The cubic root of 42189042 is about 348.1234038500.

The spelling of 42189042 in words is "forty-two million, one hundred eighty-nine thousand, forty-two".