42289668 has 96 divisors (see below), whose sum is σ = 118742400. Its totient is φ = 12970368.

The previous prime is 42289661. The next prime is 42289669. The reversal of 42289668 is 86698224.

It is not an unprimeable number, because it can be changed into a prime (42289661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75646 + ... + 76202.

It is an arithmetic number, because the mean of its divisors is an integer number (1236900).

Almost surely, 2^42289668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42289668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59371200).

42289668 is an abundant number, since it is smaller than the sum of its proper divisors (76452732).

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

42289668 is a wasteful number, since it uses less digits than its factorization.

42289668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626 (or 618 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 42289668 is about 6503.0506687246. The cubic root of 42289668 is about 348.3999563254.

The spelling of 42289668 in words is "forty-two million, two hundred eighty-nine thousand, six hundred sixty-eight".