133721302 has 16 divisors (see below), whose sum is σ = 235649232. Its totient is φ = 56106720.

The previous prime is 133721299. The next prime is 133721339. The reversal of 133721302 is 203127331.

It is a happy number.

133721302 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 233493 + ... + 234064.

It is an arithmetic number, because the mean of its divisors is an integer number (14728077).

Almost surely, 2^133721302 is an apocalyptic number.

133721302 is a deficient number, since it is larger than the sum of its proper divisors (101927930).

133721302 is a wasteful number, since it uses less digits than its factorization.

133721302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467583.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 133721302 is about 11563.7927169247. The cubic root of 133721302 is about 511.3679818496.

Adding to 133721302 its reverse (203127331), we get a palindrome (336848633).

The spelling of 133721302 in words is "one hundred thirty-three million, seven hundred twenty-one thousand, three hundred two".