21410134243 has 8 divisors (see below), whose sum is σ = 21636582656. Its totient is φ = 21184043400.

The previous prime is 21410134189. The next prime is 21410134267. The reversal of 21410134243 is 34243101412.

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

It is a cyclic number.

It is not a de Polignac number, because 21410134243 - 2¹⁷ = 21410003171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21410134843) 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, 31858 + ... + 209368.

It is an arithmetic number, because the mean of its divisors is an integer number (2704572832).

Almost surely, 2^21410134243 is an apocalyptic number.

21410134243 is a deficient number, since it is larger than the sum of its proper divisors (226448413).

21410134243 is a wasteful number, since it uses less digits than its factorization.

21410134243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178785.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21410134243 its reverse (34243101412), we get a palindrome (55653235655).

The spelling of 21410134243 in words is "twenty-one billion, four hundred ten million, one hundred thirty-four thousand, two hundred forty-three".