42188012 has 6 divisors (see below), whose sum is σ = 73829028. Its totient is φ = 21094004.

The previous prime is 42187997. The next prime is 42188017. The reversal of 42188012 is 21088124.

It is not an unprimeable number, because it can be changed into a prime (42188017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5273498 + ... + 5273505.

It is an arithmetic number, because the mean of its divisors is an integer number (12304838).

Almost surely, 2^42188012 is an apocalyptic number.

It is an amenable number.

42188012 is a deficient number, since it is larger than the sum of its proper divisors (31641016).

42188012 is a wasteful number, since it uses less digits than its factorization.

42188012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10547007 (or 10547005 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 42188012 is about 6495.2299420421. The cubic root of 42188012 is about 348.1205708077.

The spelling of 42188012 in words is "forty-two million, one hundred eighty-eight thousand, twelve".