123133353420 has 216 divisors, whose sum is σ = 440839031472. Its totient is φ = 25586077440.

The previous prime is 123133353419. The next prime is 123133353439. The reversal of 123133353420 is 24353331321.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 182674 + ... + 528806.

It is an arithmetic number, because the mean of its divisors is an integer number (2040921442).

Almost surely, 2^123133353420 is an apocalyptic number.

123133353420 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 123133353420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220419515736).

123133353420 is an abundant number, since it is smaller than the sum of its proper divisors (317705678052).

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

123133353420 is a wasteful number, since it uses less digits than its factorization.

123133353420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346181 (or 346161 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 30.

Adding to 123133353420 its reverse (24353331321), we get a palindrome (147486684741).

The spelling of 123133353420 in words is "one hundred twenty-three billion, one hundred thirty-three million, three hundred fifty-three thousand, four hundred twenty".