21142132104043 has 2 divisors, whose sum is σ = 21142132104044. Its totient is φ = 21142132104042.

The previous prime is 21142132104019. The next prime is 21142132104083. The reversal of 21142132104043 is 34040123124112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21142132104043 - 2⁴¹ = 18943108848491 is a prime.

It is not a weakly prime, because it can be changed into another prime (21142132104083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10571066052021 + 10571066052022.

It is an arithmetic number, because the mean of its divisors is an integer number (10571066052022).

Almost surely, 2^{21142132104043} is an apocalyptic number.

21142132104043 is a deficient number, since it is larger than the sum of its proper divisors (1).

21142132104043 is an equidigital number, since it uses as much as digits as its factorization.

21142132104043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 21142132104043 its reverse (34040123124112), we get a palindrome (55182255228155).

The spelling of 21142132104043 in words is "twenty-one trillion, one hundred forty-two billion, one hundred thirty-two million, one hundred four thousand, forty-three".