21413420231234 has 16 divisors (see below), whose sum is σ = 32126432009400. Its totient is φ = 10704609761664.

The previous prime is 21413420231201. The next prime is 21413420231249. The reversal of 21413420231234 is 43213202431412.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 21397590817009 + 15829414225 = 4625753^2 + 125815^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21413420231234.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291187382 + ... + 291260910.

Almost surely, 2^{21413420231234} is an apocalyptic number.

21413420231234 is a deficient number, since it is larger than the sum of its proper divisors (10713011778166).

21413420231234 is a wasteful number, since it uses less digits than its factorization.

21413420231234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100117.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 21413420231234 its reverse (43213202431412), we get a palindrome (64626622662646).

The spelling of 21413420231234 in words is "twenty-one trillion, four hundred thirteen billion, four hundred twenty million, two hundred thirty-one thousand, two hundred thirty-four".