642052606 has 16 divisors (see below), whose sum is σ = 1037582784. Its totient is φ = 296211744.

The previous prime is 642052597. The next prime is 642052637. The reversal of 642052606 is 606250246.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110875 + ... + 116521.

It is an arithmetic number, because the mean of its divisors is an integer number (64848924).

Almost surely, 2^642052606 is an apocalyptic number.

642052606 is a deficient number, since it is larger than the sum of its proper divisors (395530178).

642052606 is a wasteful number, since it uses less digits than its factorization.

642052606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10035.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 642052606 is about 25338.7569939806. The cubic root of 642052606 is about 862.6941856688.

The spelling of 642052606 in words is "six hundred forty-two million, fifty-two thousand, six hundred six".