42897906 has 24 divisors (see below), whose sum is σ = 93085200. Its totient is φ = 14277816.

The previous prime is 42897859. The next prime is 42897937. The reversal of 42897906 is 60979824.

It is a happy number.

42897906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon 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 11 ways as a sum of consecutive naturals, for example, 14545 + ... + 17243.

It is an arithmetic number, because the mean of its divisors is an integer number (3878550).

Almost surely, 2^42897906 is an apocalyptic number.

42897906 is an abundant number, since it is smaller than the sum of its proper divisors (50187294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42897906 is a wasteful number, since it uses less digits than its factorization.

42897906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3590 (or 3587 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 42897906 is about 6549.6493035887. The cubic root of 42897906 is about 350.0623181552.

The spelling of 42897906 in words is "forty-two million, eight hundred ninety-seven thousand, nine hundred six".