42543601 has 8 divisors (see below), whose sum is σ = 43542144. Its totient is φ = 41549040.

The previous prime is 42543581. The next prime is 42543617. The reversal of 42543601 is 10634524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42543601 - 2⁹ = 42543089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42543671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35746 + ... + 36916.

It is an arithmetic number, because the mean of its divisors is an integer number (5442768).

Almost surely, 2^42543601 is an apocalyptic number.

It is an amenable number.

42543601 is a deficient number, since it is larger than the sum of its proper divisors (998543).

42543601 is a wasteful number, since it uses less digits than its factorization.

42543601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 42543601 is about 6522.5455920216. The cubic root of 42543601 is about 349.0959006082.

The spelling of 42543601 in words is "forty-two million, five hundred forty-three thousand, six hundred one".