42857648 has 20 divisors (see below), whose sum is σ = 86647728. Its totient is φ = 20496960.

The previous prime is 42857641. The next prime is 42857651. The reversal of 42857648 is 84675824.

42857648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 42857599 and 42857608.

It is not an unprimeable number, because it can be changed into a prime (42857641) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 57863 + ... + 58598.

Almost surely, 2^42857648 is an apocalyptic number.

It is an amenable number.

42857648 is an abundant number, since it is smaller than the sum of its proper divisors (43790080).

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

42857648 is a wasteful number, since it uses less digits than its factorization.

42857648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116492 (or 116486 counting only the distinct ones).

The product of its digits is 430080, while the sum is 44.

The square root of 42857648 is about 6546.5752878891. The cubic root of 42857648 is about 349.9527773024.

The spelling of 42857648 in words is "forty-two million, eight hundred fifty-seven thousand, six hundred forty-eight".