42812812 has 12 divisors (see below), whose sum is σ = 85625680. Its totient is φ = 18348336.

The previous prime is 42812807. The next prime is 42812813. The reversal of 42812812 is 21821824.

42812812 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 1529029 = 42812812 / (4 + 2 + 8 + 1 + 2 + 8 + 1 + 2).

It is not an unprimeable number, because it can be changed into a prime (42812813) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 764487 + ... + 764542.

Almost surely, 2^42812812 is an apocalyptic number.

It is an amenable number.

42812812 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42812812 is a wasteful number, since it uses less digits than its factorization.

42812812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1529040 (or 1529038 counting only the distinct ones).

The product of its digits is 2048, while the sum is 28.

The square root of 42812812 is about 6543.1500059222. The cubic root of 42812812 is about 349.8306990719.

The spelling of 42812812 in words is "forty-two million, eight hundred twelve thousand, eight hundred twelve".