21412433242 has 8 divisors (see below), whose sum is σ = 32802025536. Its totient is φ = 10478424732.

The previous prime is 21412433213. The next prime is 21412433267. The reversal of 21412433242 is 24233421412.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21412433242.

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, 113895828 + ... + 113896015.

It is an arithmetic number, because the mean of its divisors is an integer number (4100253192).

Almost surely, 2^21412433242 is an apocalyptic number.

21412433242 is a deficient number, since it is larger than the sum of its proper divisors (11389592294).

21412433242 is a wasteful number, since it uses less digits than its factorization.

21412433242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227791892.

The product of its digits is 9216, while the sum is 28.

Adding to 21412433242 its reverse (24233421412), we get a palindrome (45645854654).

The spelling of 21412433242 in words is "twenty-one billion, four hundred twelve million, four hundred thirty-three thousand, two hundred forty-two".