42039569601 has 6 divisors (see below), whose sum is σ = 60723822770. Its totient is φ = 28026379728.

The previous prime is 42039569581. The next prime is 42039569617. The reversal of 42039569601 is 10696593024.

42039569601 is a `hidden beast` number, since 4 + 2 + 0 + 39 + 5 + 6 + 9 + 601 = 666.

It can be written as a sum of positive squares in only one way, i.e., 35607690000 + 6431879601 = 188700^2 + 80199^2 .

It is a de Polignac number, because none of the positive numbers 2^k-42039569601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42039569641) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2335531636 + ... + 2335531653.

Almost surely, 2^42039569601 is an apocalyptic number.

It is an amenable number.

42039569601 is a deficient number, since it is larger than the sum of its proper divisors (18684253169).

42039569601 is a wasteful number, since it uses less digits than its factorization.

42039569601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4671063295 (or 4671063292 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The spelling of 42039569601 in words is "forty-two billion, thirty-nine million, five hundred sixty-nine thousand, six hundred one".