123041305 has 4 divisors (see below), whose sum is σ = 147649572. Its totient is φ = 98433040.

The previous prime is 123041273. The next prime is 123041323. The reversal of 123041305 is 503140321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 90174016 + 32867289 = 9496^2 + 5733^2 .

It is not a de Polignac number, because 123041305 - 2⁵ = 123041273 is a prime.

It is a super-2 number, since 2×123041305² = 30278325472206050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12304126 + ... + 12304135.

It is an arithmetic number, because the mean of its divisors is an integer number (36912393).

Almost surely, 2^123041305 is an apocalyptic number.

It is an amenable number.

123041305 is a deficient number, since it is larger than the sum of its proper divisors (24608267).

123041305 is an equidigital number, since it uses as much as digits as its factorization.

123041305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24608266.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 123041305 is about 11092.3985233132. The cubic root of 123041305 is about 497.3746458245.

Adding to 123041305 its reverse (503140321), we get a palindrome (626181626).

The spelling of 123041305 in words is "one hundred twenty-three million, forty-one thousand, three hundred five".