642467150305 has 8 divisors (see below), whose sum is σ = 771899635944. Its totient is φ = 513347683200.

The previous prime is 642467150243. The next prime is 642467150309. The reversal of 642467150305 is 503051764246.

It can be written as a sum of positive squares in 4 ways, for example, as 28889460961 + 613577689344 = 169969^2 + 783312^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 642467150305 - 2¹⁹ = 642466626017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (642467150309) by changing a digit.

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, 78250116 + ... + 78258325.

It is an arithmetic number, because the mean of its divisors is an integer number (96487454493).

Almost surely, 2^642467150305 is an apocalyptic number.

It is an amenable number.

642467150305 is a deficient number, since it is larger than the sum of its proper divisors (129432485639).

642467150305 is a wasteful number, since it uses less digits than its factorization.

642467150305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156509267.

The product of its (nonzero) digits is 604800, while the sum is 43.

The spelling of 642467150305 in words is "six hundred forty-two billion, four hundred sixty-seven million, one hundred fifty thousand, three hundred five".