123209064 has 96 divisors (see below), whose sum is σ = 385482240. Its totient is φ = 35136000.

The previous prime is 123209063. The next prime is 123209071. The reversal of 123209064 is 460902321.

It is a super-3 number, since 3×123209064³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (123209063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8889 + ... + 18039.

It is an arithmetic number, because the mean of its divisors is an integer number (4015440).

Almost surely, 2^123209064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123209064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192741120).

123209064 is an abundant number, since it is smaller than the sum of its proper divisors (262273176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123209064 is a wasteful number, since it uses less digits than its factorization.

123209064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9191 (or 9184 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 123209064 is about 11099.9578377578. The cubic root of 123209064 is about 497.6005894094.

The spelling of 123209064 in words is "one hundred twenty-three million, two hundred nine thousand, sixty-four".