21432143041 has 2 divisors, whose sum is σ = 21432143042. Its totient is φ = 21432143040.

The previous prime is 21432143039. The next prime is 21432143063. The reversal of 21432143041 is 14034123412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21332063025 + 100080016 = 146055^2 + 10004^2 .

It is a cyclic number.

It is not a de Polignac number, because 21432143041 - 2¹ = 21432143039 is a prime.

Together with 21432143039, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 21432142997 and 21432143015.

It is not a weakly prime, because it can be changed into another prime (21432143081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10716071520 + 10716071521.

It is an arithmetic number, because the mean of its divisors is an integer number (10716071521).

Almost surely, 2^21432143041 is an apocalyptic number.

It is an amenable number.

21432143041 is a deficient number, since it is larger than the sum of its proper divisors (1).

21432143041 is an equidigital number, since it uses as much as digits as its factorization.

21432143041 is an evil number, because the sum of its binary digits is even.

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

Adding to 21432143041 its reverse (14034123412), we get a palindrome (35466266453).

The spelling of 21432143041 in words is "twenty-one billion, four hundred thirty-two million, one hundred forty-three thousand, forty-one".