123905282 has 18 divisors (see below), whose sum is σ = 197861193. Its totient is φ = 58182432.

The previous prime is 123905269. The next prime is 123905293. The reversal of 123905282 is 282509321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 113401201 + 10504081 = 10649^2 + 3241^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=7871.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 267383 + ... + 267845.

Almost surely, 2^123905282 is an apocalyptic number.

123905282 is a deficient number, since it is larger than the sum of its proper divisors (73955911).

123905282 is an frugal number, since it uses more digits than its factorization.

123905282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 123905282 is about 11131.2749494386. The cubic root of 123905282 is about 498.5360941422.

Multiplying 123905282 by its sum of digits (32), we get a square (3964969024 = 62968²).

The spelling of 123905282 in words is "one hundred twenty-three million, nine hundred five thousand, two hundred eighty-two".