123839000 has 64 divisors (see below), whose sum is σ = 297704160. Its totient is φ = 48182400.

The previous prime is 123838993. The next prime is 123839003. The reversal of 123839000 is 938321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123839003) 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 15 ways as a sum of consecutive naturals, for example, 35327 + ... + 38673.

Almost surely, 2^123839000 is an apocalyptic number.

123839000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123839000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148852080).

123839000 is an abundant number, since it is smaller than the sum of its proper divisors (173865160).

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

123839000 is a wasteful number, since it uses less digits than its factorization.

123839000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3405 (or 3391 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 123839000 is about 11128.2972641820. The cubic root of 123839000 is about 498.4471825080.

The spelling of 123839000 in words is "one hundred twenty-three million, eight hundred thirty-nine thousand".