21404304141 has 8 divisors (see below), whose sum is σ = 31133533344. Its totient is φ = 12972305520.

The previous prime is 21404304071. The next prime is 21404304149. The reversal of 21404304141 is 14140340412.

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

It is not a de Polignac number, because 21404304141 - 2³¹ = 19256820493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21404304149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324307606 + ... + 324307671.

It is an arithmetic number, because the mean of its divisors is an integer number (3891691668).

Almost surely, 2^21404304141 is an apocalyptic number.

It is an amenable number.

21404304141 is a deficient number, since it is larger than the sum of its proper divisors (9729229203).

21404304141 is a wasteful number, since it uses less digits than its factorization.

21404304141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648615291.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 21404304141 its reverse (14140340412), we get a palindrome (35544644553).

The spelling of 21404304141 in words is "twenty-one billion, four hundred four million, three hundred four thousand, one hundred forty-one".