642200311298 has 90 divisors (see below), whose sum is σ = 1216491548031. Its totient is φ = 253526875056.

The previous prime is 642200311261. The next prime is 642200311303. The reversal of 642200311298 is 892113002246.

It can be written as a sum of positive squares in 3 ways, for example, as 11242609 + 642189068689 = 3353^2 + 801367^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=566657.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 1340710223 + ... + 1340710701.

Almost surely, 2^642200311298 is an apocalyptic number.

642200311298 is a deficient number, since it is larger than the sum of its proper divisors (574291236733).

642200311298 is an frugal number, since it uses more digits than its factorization.

642200311298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026 (or 501 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The spelling of 642200311298 in words is "six hundred forty-two billion, two hundred million, three hundred eleven thousand, two hundred ninety-eight".