264020642442 has 48 divisors (see below), whose sum is σ = 605791472832. Its totient is φ = 82816732800.

The previous prime is 264020642411. The next prime is 264020642447. The reversal of 264020642442 is 244246020462.

264020642442 is a `hidden beast` number, since 2 + 6 + 4 + 0 + 2 + 0 + 642 + 4 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 264020642397 and 264020642406.

It is not an unprimeable number, because it can be changed into a prime (264020642447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1938753 + ... + 2070459.

It is an arithmetic number, because the mean of its divisors is an integer number (12620655684).

Almost surely, 2^264020642442 is an apocalyptic number.

264020642442 is an abundant number, since it is smaller than the sum of its proper divisors (341770830390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

264020642442 is a wasteful number, since it uses less digits than its factorization.

264020642442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138283 (or 138280 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 36.

The spelling of 264020642442 in words is "two hundred sixty-four billion, twenty million, six hundred forty-two thousand, four hundred forty-two".