21434002041 has 4 divisors (see below), whose sum is σ = 28578669392. Its totient is φ = 14289334692.

The previous prime is 21434002039. The next prime is 21434002069. The reversal of 21434002041 is 14020043412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 21434002041 - 2¹ = 21434002039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21434001999 and 21434002017.

It is not an unprimeable number, because it can be changed into a prime (21434002001) 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, 3572333671 + ... + 3572333676.

It is an arithmetic number, because the mean of its divisors is an integer number (7144667348).

Almost surely, 2^21434002041 is an apocalyptic number.

It is an amenable number.

21434002041 is a deficient number, since it is larger than the sum of its proper divisors (7144667351).

21434002041 is an equidigital number, since it uses as much as digits as its factorization.

21434002041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7144667350.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 21434002041 its reverse (14020043412), we get a palindrome (35454045453).

The spelling of 21434002041 in words is "twenty-one billion, four hundred thirty-four million, two thousand, forty-one".