123069 has 4 divisors (see below), whose sum is σ = 164096. Its totient is φ = 82044.

The previous prime is 123059. The next prime is 123077. The reversal of 123069 is 960321.

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: 960321 = 3 ⋅320107.

It is not a de Polignac number, because 123069 - 2⁹ = 122557 is a prime.

It is a super-2 number, since 2×123069² = 30291957522, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123049) 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, 20509 + ... + 20514.

It is an arithmetic number, because the mean of its divisors is an integer number (41024).

2¹²³⁰⁶⁹ is an apocalyptic number.

It is an amenable number.

123069 is a deficient number, since it is larger than the sum of its proper divisors (41027).

123069 is an equidigital number, since it uses as much as digits as its factorization.

123069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41026.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 123069 is about 350.8119154191. The cubic root of 123069 is about 49.7411960550.

It can be divided in two parts, 12 and 3069, that added together give a triangular number (3081 = T₇₈).

The spelling of 123069 in words is "one hundred twenty-three thousand, sixty-nine".