4640340202542 has 128 divisors (see below), whose sum is σ = 11302168204800. Its totient is φ = 1399562841600.

The previous prime is 4640340202523. The next prime is 4640340202601. The reversal of 4640340202542 is 2452020430464.

4640340202542 is a `hidden beast` number, since 4 + 6 + 40 + 340 + 20 + 254 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 4640340202497 and 4640340202506.

It is a congruent 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 63 ways as a sum of consecutive naturals, for example, 296177793 + ... + 296193459.

It is an arithmetic number, because the mean of its divisors is an integer number (88298189100).

Almost surely, 2^{4640340202542} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4640340202542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5651084102400).

4640340202542 is an abundant number, since it is smaller than the sum of its proper divisors (6661828002258).

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

4640340202542 is a wasteful number, since it uses less digits than its factorization.

4640340202542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17999 (or 17993 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 36.

The spelling of 4640340202542 in words is "four trillion, six hundred forty billion, three hundred forty million, two hundred two thousand, five hundred forty-two".