28420210135123 has 2 divisors, whose sum is σ = 28420210135124. Its totient is φ = 28420210135122.

The previous prime is 28420210135013. The next prime is 28420210135159. The reversal of 28420210135123 is 32153101202482.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28420210135123 - 2²⁹ = 28419673264211 is a prime.

It is not a weakly prime, because it can be changed into another prime (28420210135523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14210105067561 + 14210105067562.

It is an arithmetic number, because the mean of its divisors is an integer number (14210105067562).

Almost surely, 2^{28420210135123} is an apocalyptic number.

28420210135123 is a deficient number, since it is larger than the sum of its proper divisors (1).

28420210135123 is an equidigital number, since it uses as much as digits as its factorization.

28420210135123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 34.

The spelling of 28420210135123 in words is "twenty-eight trillion, four hundred twenty billion, two hundred ten million, one hundred thirty-five thousand, one hundred twenty-three".