42242812 has 24 divisors (see below), whose sum is σ = 77414400. Its totient is φ = 20131056.

The previous prime is 42242803. The next prime is 42242831. The reversal of 42242812 is 21824224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32389 + ... + 33667.

It is an arithmetic number, because the mean of its divisors is an integer number (3225600).

Almost surely, 2^42242812 is an apocalyptic number.

It is an amenable number.

42242812 is a deficient number, since it is larger than the sum of its proper divisors (35171588).

42242812 is a wasteful number, since it uses less digits than its factorization.

42242812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665 (or 1663 counting only the distinct ones).

The product of its digits is 2048, while the sum is 25.

The square root of 42242812 is about 6499.4470534039. The cubic root of 42242812 is about 348.2712356713.

It can be divided in two parts, 422 and 42812, that added together give a palindrome (43234).

The spelling of 42242812 in words is "forty-two million, two hundred forty-two thousand, eight hundred twelve".