123420330 has 96 divisors (see below), whose sum is σ = 356166720. Its totient is φ = 29399040.

The previous prime is 123420329. The next prime is 123420347. The reversal of 123420330 is 33024321.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 57354 + ... + 59466.

It is an arithmetic number, because the mean of its divisors is an integer number (3710070).

Almost surely, 2^123420330 is an apocalyptic number.

123420330 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 123420330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178083360).

123420330 is an abundant number, since it is smaller than the sum of its proper divisors (232746390).

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

123420330 is a wasteful number, since it uses less digits than its factorization.

123420330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2196 (or 2193 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 123420330 is about 11109.4702844015. The cubic root of 123420330 is about 497.8848381313.

Adding to 123420330 its reverse (33024321), we get a palindrome (156444651).

The spelling of 123420330 in words is "one hundred twenty-three million, four hundred twenty thousand, three hundred thirty".