42881612 has 12 divisors (see below), whose sum is σ = 75355896. Its totient is φ = 21351360.

The previous prime is 42881563. The next prime is 42881623. The reversal of 42881612 is 21618824.

It is a happy number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 21278 + ... + 23205.

It is an arithmetic number, because the mean of its divisors is an integer number (6279658).

Almost surely, 2^42881612 is an apocalyptic number.

It is an amenable number.

42881612 is a deficient number, since it is larger than the sum of its proper divisors (32474284).

42881612 is a wasteful number, since it uses less digits than its factorization.

42881612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44728 (or 44726 counting only the distinct ones).

The product of its digits is 6144, while the sum is 32.

The square root of 42881612 is about 6548.4053020564. The cubic root of 42881612 is about 350.0179909119.

The spelling of 42881612 in words is "forty-two million, eight hundred eighty-one thousand, six hundred twelve".