42521608 has 16 divisors (see below), whose sum is σ = 79894080. Its totient is φ = 21216528.

The previous prime is 42521603. The next prime is 42521623. The reversal of 42521608 is 80612524.

It is not an unprimeable number, because it can be changed into a prime (42521603) 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, 1260 + ... + 9307.

It is an arithmetic number, because the mean of its divisors is an integer number (4993380).

Almost surely, 2^42521608 is an apocalyptic number.

It is an amenable number.

42521608 is a deficient number, since it is larger than the sum of its proper divisors (37372472).

42521608 is a wasteful number, since it uses less digits than its factorization.

42521608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11076 (or 11072 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 42521608 is about 6520.8594525568. The cubic root of 42521608 is about 349.0357349637.

The spelling of 42521608 in words is "forty-two million, five hundred twenty-one thousand, six hundred eight".