42290812 has 24 divisors (see below), whose sum is σ = 75588912. Its totient is φ = 20697600.

The previous prime is 42290797. The next prime is 42290837. The reversal of 42290812 is 21809224.

42290812 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 an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 85887 + ... + 86377.

It is an arithmetic number, because the mean of its divisors is an integer number (3149538).

Almost surely, 2^42290812 is an apocalyptic number.

It is an amenable number.

42290812 is a deficient number, since it is larger than the sum of its proper divisors (33298100).

42290812 is a wasteful number, since it uses less digits than its factorization.

42290812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909 (or 907 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 42290812 is about 6503.1386268478. The cubic root of 42290812 is about 348.4030978804.

The spelling of 42290812 in words is "forty-two million, two hundred ninety thousand, eight hundred twelve".