642306059 has 4 divisors (see below), whose sum is σ = 642361416. Its totient is φ = 642250704.

The previous prime is 642306029. The next prime is 642306061. The reversal of 642306059 is 950603246.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 642306059 - 2¹² = 642301963 is a prime.

It is a super-2 number, since 2×642306059² = 825114146856222962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (642306029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2849 + ... + 35954.

It is an arithmetic number, because the mean of its divisors is an integer number (160590354).

Almost surely, 2^642306059 is an apocalyptic number.

642306059 is a deficient number, since it is larger than the sum of its proper divisors (55357).

642306059 is a wasteful number, since it uses less digits than its factorization.

642306059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55356.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 642306059 is about 25343.7577916141. The cubic root of 642306059 is about 862.8076881359.

The spelling of 642306059 in words is "six hundred forty-two million, three hundred six thousand, fifty-nine".