123055123 has 4 divisors (see below), whose sum is σ = 123077448. Its totient is φ = 123032800.

The previous prime is 123055109. The next prime is 123055139. The reversal of 123055123 is 321550321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321550321 = 31 ⋅10372591.

It is a cyclic number.

It is not a de Polignac number, because 123055123 - 2¹⁷ = 122924051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123055094 and 123055103.

It is not an unprimeable number, because it can be changed into a prime (123055183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3723 + ... + 16123.

It is an arithmetic number, because the mean of its divisors is an integer number (30769362).

Almost surely, 2^123055123 is an apocalyptic number.

123055123 is a deficient number, since it is larger than the sum of its proper divisors (22325).

123055123 is an equidigital number, since it uses as much as digits as its factorization.

123055123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22324.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 123055123 is about 11093.0213648041. The cubic root of 123055123 is about 497.3932641403.

The spelling of 123055123 in words is "one hundred twenty-three million, fifty-five thousand, one hundred twenty-three".