133134012 has 72 divisors (see below), whose sum is σ = 379819440. Its totient is φ = 38949120.

The previous prime is 133133981. The next prime is 133134013. The reversal of 133134012 is 210431331.

It is a super-2 number, since 2×133134012² = 35449330302432288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133134013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5688 + ... + 17280.

It is an arithmetic number, because the mean of its divisors is an integer number (5275270).

Almost surely, 2^133134012 is an apocalyptic number.

133134012 is a gapful number since it is divisible by the number (12) 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 133134012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189909720).

133134012 is an abundant number, since it is smaller than the sum of its proper divisors (246685428).

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

133134012 is a wasteful number, since it uses less digits than its factorization.

133134012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11643 (or 11638 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 133134012 is about 11538.3712888778. The cubic root of 133134012 is about 510.6182582743.

Adding to 133134012 its reverse (210431331), we get a palindrome (343565343).

The spelling of 133134012 in words is "one hundred thirty-three million, one hundred thirty-four thousand, twelve".