42018812 has 12 divisors (see below), whose sum is σ = 80217816. Its totient is φ = 19099440.

The previous prime is 42018811. The next prime is 42018817. The reversal of 42018812 is 21881024.

42018812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42018811) 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 3 ways as a sum of consecutive naturals, for example, 477443 + ... + 477530.

It is an arithmetic number, because the mean of its divisors is an integer number (6684818).

Almost surely, 2^42018812 is an apocalyptic number.

It is an amenable number.

42018812 is a deficient number, since it is larger than the sum of its proper divisors (38199004).

42018812 is a wasteful number, since it uses less digits than its factorization.

42018812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954988 (or 954986 counting only the distinct ones).

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

The square root of 42018812 is about 6482.1919132343. The cubic root of 42018812 is about 347.6545543717.

Adding to 42018812 its reverse (21881024), we get a palindrome (63899836).

The spelling of 42018812 in words is "forty-two million, eighteen thousand, eight hundred twelve".