21344030342 has 16 divisors (see below), whose sum is σ = 33807432240. Its totient is φ = 10078430688.

The previous prime is 21344030303. The next prime is 21344030353. The reversal of 21344030342 is 24303044312.

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, 873893 + ... + 897984.

It is an arithmetic number, because the mean of its divisors is an integer number (2112964515).

Almost surely, 2^21344030342 is an apocalyptic number.

21344030342 is a deficient number, since it is larger than the sum of its proper divisors (12463401898).

21344030342 is a wasteful number, since it uses less digits than its factorization.

21344030342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772215.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 21344030342 its reverse (24303044312), we get a palindrome (45647074654).

The spelling of 21344030342 in words is "twenty-one billion, three hundred forty-four million, thirty thousand, three hundred forty-two".