9428215123 has 2 divisors, whose sum is σ = 9428215124. Its totient is φ = 9428215122.

The previous prime is 9428215117. The next prime is 9428215133. The reversal of 9428215123 is 3215128249.

9428215123 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9428215123 - 2⁵ = 9428215091 is a prime.

It is not a weakly prime, because it can be changed into another prime (9428215133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4714107561 + 4714107562.

It is an arithmetic number, because the mean of its divisors is an integer number (4714107562).

Almost surely, 2^9428215123 is an apocalyptic number.

9428215123 is a deficient number, since it is larger than the sum of its proper divisors (1).

9428215123 is an equidigital number, since it uses as much as digits as its factorization.

9428215123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 37.

The square root of 9428215123 is about 97098.9965087178. The cubic root of 9428215123 is about 2112.5637713695.

The spelling of 9428215123 in words is "nine billion, four hundred twenty-eight million, two hundred fifteen thousand, one hundred twenty-three".