642023852306 has 16 divisors (see below), whose sum is σ = 963578873880. Its totient is φ = 320830944000.

The previous prime is 642023852293. The next prime is 642023852317. The reversal of 642023852306 is 603258320246.

It can be written as a sum of positive squares in 4 ways, for example, as 268080595225 + 373943257081 = 517765^2 + 611509^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54788360 + ... + 54800076.

Almost surely, 2^642023852306 is an apocalyptic number.

642023852306 is a deficient number, since it is larger than the sum of its proper divisors (321555021574).

642023852306 is a wasteful number, since it uses less digits than its factorization.

642023852306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24829.

The product of its (nonzero) digits is 414720, while the sum is 41.

The spelling of 642023852306 in words is "six hundred forty-two billion, twenty-three million, eight hundred fifty-two thousand, three hundred six".