123039069 has 4 divisors (see below), whose sum is σ = 164052096. Its totient is φ = 82026044.

The previous prime is 123039053. The next prime is 123039071. The reversal of 123039069 is 960930321.

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.

It is a cyclic number.

It is not a de Polignac number, because 123039069 - 2⁴ = 123039053 is a prime.

It is a super-2 number, since 2×123039069² = 30277225000773522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123039019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20506509 + ... + 20506514.

It is an arithmetic number, because the mean of its divisors is an integer number (41013024).

Almost surely, 2^123039069 is an apocalyptic number.

It is an amenable number.

123039069 is a deficient number, since it is larger than the sum of its proper divisors (41013027).

123039069 is an equidigital number, since it uses as much as digits as its factorization.

123039069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41013026.

The product of its (nonzero) digits is 8748, while the sum is 33.

The square root of 123039069 is about 11092.2977331119. The cubic root of 123039069 is about 497.3716329164.

Subtracting from 123039069 its product of nonzero digits (8748), we obtain a palindrome (123030321).

The spelling of 123039069 in words is "one hundred twenty-three million, thirty-nine thousand, sixty-nine".