133041220 has 48 divisors (see below), whose sum is σ = 305157888. Its totient is φ = 48424320.

The previous prime is 133041199. The next prime is 133041221. The reversal of 133041220 is 22140331.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 133041194 and 133041203.

It is not an unprimeable number, because it can be changed into a prime (133041221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14857 + ... + 22063.

It is an arithmetic number, because the mean of its divisors is an integer number (6357456).

Almost surely, 2^133041220 is an apocalyptic number.

133041220 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 133041220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152578944).

133041220 is an abundant number, since it is smaller than the sum of its proper divisors (172116668).

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

133041220 is a wasteful number, since it uses less digits than its factorization.

133041220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7300 (or 7298 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 133041220 is about 11534.3495698717. The cubic root of 133041220 is about 510.4996001369.

Adding to 133041220 its reverse (22140331), we get a palindrome (155181551).

The spelling of 133041220 in words is "one hundred thirty-three million, forty-one thousand, two hundred twenty".