42206812 has 12 divisors (see below), whose sum is σ = 74170096. Its totient is φ = 21015360.

The previous prime is 42206797. The next prime is 42206819. The reversal of 42206812 is 21860224.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42206819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20928 + ... + 22855.

Almost surely, 2^42206812 is an apocalyptic number.

It is an amenable number.

42206812 is a deficient number, since it is larger than the sum of its proper divisors (31963284).

42206812 is a wasteful number, since it uses less digits than its factorization.

42206812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44028 (or 44026 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 42206812 is about 6496.6769967423. The cubic root of 42206812 is about 348.1722734479.

The spelling of 42206812 in words is "forty-two million, two hundred six thousand, eight hundred twelve".