21300244342 has 16 divisors (see below), whose sum is σ = 34410499200. Its totient is φ = 9830192832.

The previous prime is 21300244331. The next prime is 21300244351. The reversal of 21300244342 is 24344200312.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 670858 + ... + 701890.

It is an arithmetic number, because the mean of its divisors is an integer number (2150656200).

Almost surely, 2^21300244342 is an apocalyptic number.

21300244342 is a deficient number, since it is larger than the sum of its proper divisors (13110254858).

21300244342 is a wasteful number, since it uses less digits than its factorization.

21300244342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57447.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 21300244342 its reverse (24344200312), we get a palindrome (45644444654).

The spelling of 21300244342 in words is "twenty-one billion, three hundred million, two hundred forty-four thousand, three hundred forty-two".