123403000 has 192 divisors, whose sum is σ = 356316480. Its totient is φ = 39168000.

The previous prime is 123402973. The next prime is 123403031. The reversal of 123403000 is 304321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2022970 + ... + 2023030.

It is an arithmetic number, because the mean of its divisors is an integer number (1855815).

Almost surely, 2^123403000 is an apocalyptic number.

123403000 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 123403000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178158240).

123403000 is an abundant number, since it is smaller than the sum of its proper divisors (232913480).

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

123403000 is a wasteful number, since it uses less digits than its factorization.

123403000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 92 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 123403000 is about 11108.6902918391. The cubic root of 123403000 is about 497.8615336289.

Adding to 123403000 its reverse (304321), we get a palindrome (123707321).

The spelling of 123403000 in words is "one hundred twenty-three million, four hundred three thousand".