21413523015242 has 8 divisors (see below), whose sum is σ = 33810825813600. Its totient is φ = 10143247744044.

The previous prime is 21413523015217. The next prime is 21413523015289. The reversal of 21413523015242 is 24251032531412.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281756881742 + ... + 281756881817.

It is an arithmetic number, because the mean of its divisors is an integer number (4226353226700).

Almost surely, 2^{21413523015242} is an apocalyptic number.

21413523015242 is a deficient number, since it is larger than the sum of its proper divisors (12397302798358).

21413523015242 is a wasteful number, since it uses less digits than its factorization.

21413523015242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563513763580.

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 21413523015242 its reverse (24251032531412), we get a palindrome (45664555546654).

The spelling of 21413523015242 in words is "twenty-one trillion, four hundred thirteen billion, five hundred twenty-three million, fifteen thousand, two hundred forty-two".