138242284562 has 6 divisors (see below), whose sum is σ = 207364215573. Its totient is φ = 69120879372.

The previous prime is 138242284549. The next prime is 138242284577. The reversal of 138242284562 is 265482242831.

It can be written as a sum of positive squares in 2 ways, for example, as 96939445201 + 41302839361 = 311351^2 + 203231^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=262909.

It is a super-2 number, since 2×138242284562² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 394364 + ... + 657272.

Almost surely, 2^138242284562 is an apocalyptic number.

138242284562 is a deficient number, since it is larger than the sum of its proper divisors (69121931011).

138242284562 is an frugal number, since it uses more digits than its factorization.

138242284562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525820 (or 262911 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 47.

The spelling of 138242284562 in words is "one hundred thirty-eight billion, two hundred forty-two million, two hundred eighty-four thousand, five hundred sixty-two".