133121334 has 16 divisors (see below), whose sum is σ = 280255680. Its totient is φ = 42038280.

The previous prime is 133121321. The next prime is 133121341. The reversal of 133121334 is 433121331.

It is a self number, because there is not a number n which added to its sum of digits gives 133121334.

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, 583752 + ... + 583979.

It is an arithmetic number, because the mean of its divisors is an integer number (17515980).

Almost surely, 2^133121334 is an apocalyptic number.

133121334 is an abundant number, since it is smaller than the sum of its proper divisors (147134346).

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

133121334 is a wasteful number, since it uses less digits than its factorization.

133121334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167755.

The product of its digits is 648, while the sum is 21.

The square root of 133121334 is about 11537.8218915010. The cubic root of 133121334 is about 510.6020494842.

Adding to 133121334 its reverse (433121331), we get a palindrome (566242665).

The spelling of 133121334 in words is "one hundred thirty-three million, one hundred twenty-one thousand, three hundred thirty-four".