42009308 has 12 divisors (see below), whose sum is σ = 80199672. Its totient is φ = 19095120.

The previous prime is 42009307. The next prime is 42009311. The reversal of 42009308 is 80390024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42009307) 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, 477335 + ... + 477422.

It is an arithmetic number, because the mean of its divisors is an integer number (6683306).

Almost surely, 2^42009308 is an apocalyptic number.

It is an amenable number.

42009308 is a deficient number, since it is larger than the sum of its proper divisors (38190364).

42009308 is a wasteful number, since it uses less digits than its factorization.

42009308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954772 (or 954770 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 42009308 is about 6481.4587864153. The cubic root of 42009308 is about 347.6283410491.

The spelling of 42009308 in words is "forty-two million, nine thousand, three hundred eight".