13242000421 has 4 divisors (see below), whose sum is σ = 14260615852. Its totient is φ = 12223384992.

The previous prime is 13242000407. The next prime is 13242000439. The reversal of 13242000421 is 12400024231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2511112321 + 10730888100 = 50111^2 + 103590^2 .

It is not a de Polignac number, because 13242000421 - 2⁹ = 13241999909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13242000481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509307696 + ... + 509307721.

It is an arithmetic number, because the mean of its divisors is an integer number (3565153963).

Almost surely, 2^13242000421 is an apocalyptic number.

It is an amenable number.

13242000421 is a deficient number, since it is larger than the sum of its proper divisors (1018615431).

13242000421 is a wasteful number, since it uses less digits than its factorization.

13242000421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018615430.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 13242000421 its reverse (12400024231), we get a palindrome (25642024652).

The spelling of 13242000421 in words is "thirteen billion, two hundred forty-two million, four hundred twenty-one", and thus it is an aban number.