642535160 has 32 divisors (see below), whose sum is σ = 1521795600. Its totient is φ = 243486720.

The previous prime is 642535147. The next prime is 642535163. The reversal of 642535160 is 61535246.

642535160 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×642535160³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642535163) 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, 421961 + ... + 423480.

Almost surely, 2^642535160 is an apocalyptic number.

It is an amenable number.

642535160 is an abundant number, since it is smaller than the sum of its proper divisors (879260440).

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

642535160 is a wasteful number, since it uses less digits than its factorization.

642535160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845471 (or 845467 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 642535160 is about 25348.2772590170. The cubic root of 642535160 is about 862.9102594901.

The spelling of 642535160 in words is "six hundred forty-two million, five hundred thirty-five thousand, one hundred sixty".