42389008 has 20 divisors (see below), whose sum is σ = 82476988. Its totient is φ = 21104640.

The previous prime is 42389003. The next prime is 42389021. The reversal of 42389008 is 80098324.

It can be written as a sum of positive squares in 2 ways, for example, as 19079424 + 23309584 = 4368^2 + 4828^2 .

It is not an unprimeable number, because it can be changed into a prime (42389003) 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, 1641 + ... + 9352.

Almost surely, 2^42389008 is an apocalyptic number.

It is an amenable number.

42389008 is a deficient number, since it is larger than the sum of its proper divisors (40087980).

42389008 is a wasteful number, since it uses less digits than its factorization.

42389008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11242 (or 11236 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 42389008 is about 6510.6841422388. The cubic root of 42389008 is about 348.6725444737.

The spelling of 42389008 in words is "forty-two million, three hundred eighty-nine thousand, eight".