123255529 has 4 divisors (see below), whose sum is σ = 123287184. Its totient is φ = 123223876.

The previous prime is 123255523. The next prime is 123255533. The reversal of 123255529 is 925552321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 925552321 = 227 ⋅4077323.

It is a cyclic number.

It is not a de Polignac number, because 123255529 - 2³ = 123255521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123255494 and 123255503.

It is not an unprimeable number, because it can be changed into a prime (123255521) 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, 9007 + ... + 18100.

It is an arithmetic number, because the mean of its divisors is an integer number (30821796).

Almost surely, 2^123255529 is an apocalyptic number.

It is an amenable number.

123255529 is a deficient number, since it is larger than the sum of its proper divisors (31655).

123255529 is an equidigital number, since it uses as much as digits as its factorization.

123255529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31654.

The product of its digits is 27000, while the sum is 34.

The square root of 123255529 is about 11102.0506664310. The cubic root of 123255529 is about 497.6631337947.

The spelling of 123255529 in words is "one hundred twenty-three million, two hundred fifty-five thousand, five hundred twenty-nine".