642030563 has 4 divisors (see below), whose sum is σ = 642483168. Its totient is φ = 641577960.

The previous prime is 642030541. The next prime is 642030629. The reversal of 642030563 is 365030246.

642030563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 642030563 - 2²⁴ = 625253347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (642030503) 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, 224168 + ... + 227013.

It is an arithmetic number, because the mean of its divisors is an integer number (160620792).

Almost surely, 2^642030563 is an apocalyptic number.

642030563 is a deficient number, since it is larger than the sum of its proper divisors (452605).

642030563 is a wasteful number, since it uses less digits than its factorization.

642030563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452604.

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 642030563 is about 25338.3220241594. The cubic root of 642030563 is about 862.6843128612.

The spelling of 642030563 in words is "six hundred forty-two million, thirty thousand, five hundred sixty-three".