123013205 has 8 divisors (see below), whose sum is σ = 168703872. Its totient is φ = 84351888.

The previous prime is 123013199. The next prime is 123013213. The reversal of 123013205 is 502310321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123013205 - 2¹² = 123009109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1757297 + ... + 1757366.

It is an arithmetic number, because the mean of its divisors is an integer number (21087984).

Almost surely, 2^123013205 is an apocalyptic number.

It is an amenable number.

123013205 is a deficient number, since it is larger than the sum of its proper divisors (45690667).

123013205 is an equidigital number, since it uses as much as digits as its factorization.

123013205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3514675.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 123013205 is about 11091.1318178083. The cubic root of 123013205 is about 497.3367797013.

Adding to 123013205 its reverse (502310321), we get a palindrome (625323526).

It can be divided in two parts, 1230 and 13205, that multiplied together give a triangular number (16242150 = T₅₆₉₉).

The spelling of 123013205 in words is "one hundred twenty-three million, thirteen thousand, two hundred five".