133543020 has 96 divisors (see below), whose sum is σ = 423924480. Its totient is φ = 31138560.

The previous prime is 133543013. The next prime is 133543021. The reversal of 133543020 is 20345331.

It is not an unprimeable number, because it can be changed into a prime (133543021) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 10315 + ... + 19325.

It is an arithmetic number, because the mean of its divisors is an integer number (4415880).

Almost surely, 2^133543020 is an apocalyptic number.

133543020 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 133543020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211962240).

133543020 is an abundant number, since it is smaller than the sum of its proper divisors (290381460).

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

133543020 is a wasteful number, since it uses less digits than its factorization.

133543020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9055 (or 9053 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 133543020 is about 11556.0815158080. The cubic root of 133543020 is about 511.1406227796.

Adding to 133543020 its reverse (20345331), we get a palindrome (153888351).

The spelling of 133543020 in words is "one hundred thirty-three million, five hundred forty-three thousand, twenty".