133421412 has 12 divisors (see below), whose sum is σ = 311316656. Its totient is φ = 44473800.

The previous prime is 133421383. The next prime is 133421437. The reversal of 133421412 is 214124331.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

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 3 ways as a sum of consecutive naturals, for example, 5559214 + ... + 5559237.

Almost surely, 2^133421412 is an apocalyptic number.

133421412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133421412 is an abundant number, since it is smaller than the sum of its proper divisors (177895244).

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

133421412 is a wasteful number, since it uses less digits than its factorization.

133421412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11118458 (or 11118456 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

The square root of 133421412 is about 11550.8186722847. The cubic root of 133421412 is about 510.9854226894.

Adding to 133421412 its reverse (214124331), we get a palindrome (347545743).

The spelling of 133421412 in words is "one hundred thirty-three million, four hundred twenty-one thousand, four hundred twelve".