21404041342 has 8 divisors (see below), whose sum is σ = 32106744216. Its totient is φ = 10701793272.

The previous prime is 21404041327. The next prime is 21404041343. The reversal of 21404041342 is 24314040412.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21404041343) 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, 52608 + ... + 213484.

It is an arithmetic number, because the mean of its divisors is an integer number (4013343027).

Almost surely, 2^21404041342 is an apocalyptic number.

21404041342 is a deficient number, since it is larger than the sum of its proper divisors (10702702874).

21404041342 is a wasteful number, since it uses less digits than its factorization.

21404041342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227402.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 21404041342 its reverse (24314040412), we get a palindrome (45718081754).

The spelling of 21404041342 in words is "twenty-one billion, four hundred four million, forty-one thousand, three hundred forty-two".