123405150 has 96 divisors (see below), whose sum is σ = 345513600. Its totient is φ = 28873600.

The previous prime is 123405083. The next prime is 123405157. The reversal of 123405150 is 51504321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123405157) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46561 + ... + 49139.

It is an arithmetic number, because the mean of its divisors is an integer number (3599100).

Almost surely, 2^123405150 is an apocalyptic number.

123405150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 123405150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172756800).

123405150 is an abundant number, since it is smaller than the sum of its proper divisors (222108450).

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

123405150 is a wasteful number, since it uses less digits than its factorization.

123405150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2634 (or 2629 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 123405150 is about 11108.7870625015. The cubic root of 123405150 is about 497.8644249580.

Adding to 123405150 its reverse (51504321), we get a palindrome (174909471).

The spelling of 123405150 in words is "one hundred twenty-three million, four hundred five thousand, one hundred fifty".