123089239 has 16 divisors (see below), whose sum is σ = 159470080. Its totient is φ = 92262240.

The previous prime is 123089237. The next prime is 123089243. The reversal of 123089239 is 932980321.

It is not a de Polignac number, because 123089239 - 2¹ = 123089237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123089198 and 123089207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123089233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33867 + ... + 37324.

It is an arithmetic number, because the mean of its divisors is an integer number (9966880).

Almost surely, 2^123089239 is an apocalyptic number.

123089239 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

123089239 is a deficient number, since it is larger than the sum of its proper divisors (36380841).

123089239 is a wasteful number, since it uses less digits than its factorization.

123089239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71230.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 123089239 is about 11094.5589817712. The cubic root of 123089239 is about 497.4392259289.

The spelling of 123089239 in words is "one hundred twenty-three million, eighty-nine thousand, two hundred thirty-nine".