123203934 has 72 divisors (see below), whose sum is σ = 318191328. Its totient is φ = 34332480.

The previous prime is 123203933. The next prime is 123203953. The reversal of 123203934 is 439302321.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 123203898 and 123203907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123203933) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 34459 + ... + 37865.

It is an arithmetic number, because the mean of its divisors is an integer number (4419324).

Almost surely, 2^123203934 is an apocalyptic number.

123203934 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 123203934, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159095664).

123203934 is an abundant number, since it is smaller than the sum of its proper divisors (194987394).

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

123203934 is a wasteful number, since it uses less digits than its factorization.

123203934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3470 (or 3460 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 123203934 is about 11099.7267533935. The cubic root of 123203934 is about 497.5936831901.

The spelling of 123203934 in words is "one hundred twenty-three million, two hundred three thousand, nine hundred thirty-four".