123905293 has 2 divisors, whose sum is σ = 123905294. Its totient is φ = 123905292.

The previous prime is 123905269. The next prime is 123905297. The reversal of 123905293 is 392509321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120055849 + 3849444 = 10957^2 + 1962^2 .

It is a cyclic number.

It is not a de Polignac number, because 123905293 - 2⁵ = 123905261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123905297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61952646 + 61952647.

It is an arithmetic number, because the mean of its divisors is an integer number (61952647).

Almost surely, 2^123905293 is an apocalyptic number.

It is an amenable number.

123905293 is a deficient number, since it is larger than the sum of its proper divisors (1).

123905293 is an equidigital number, since it uses as much as digits as its factorization.

123905293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 123905293 is about 11131.2754435419. The cubic root of 123905293 is about 498.5361088951.

The spelling of 123905293 in words is "one hundred twenty-three million, nine hundred five thousand, two hundred ninety-three".