133125012 has 48 divisors (see below), whose sum is σ = 360151680. Its totient is φ = 42444864.

The previous prime is 133124987. The next prime is 133125017. The reversal of 133125012 is 210521331.

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 (133125017) 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 15 ways as a sum of consecutive naturals, for example, 24313 + ... + 29280.

It is an arithmetic number, because the mean of its divisors is an integer number (7503160).

Almost surely, 2^133125012 is an apocalyptic number.

133125012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133125012 is an abundant number, since it is smaller than the sum of its proper divisors (227026668).

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

133125012 is a wasteful number, since it uses less digits than its factorization.

133125012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53629 (or 53621 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 133125012 is about 11537.9812792360. The cubic root of 133125012 is about 510.6067519036.

Adding to 133125012 its reverse (210521331), we get a palindrome (343646343).

The spelling of 133125012 in words is "one hundred thirty-three million, one hundred twenty-five thousand, twelve".