133125040 has 20 divisors (see below), whose sum is σ = 309515904. Its totient is φ = 53249984.

The previous prime is 133125023. The next prime is 133125049. The reversal of 133125040 is 40521331.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 133124999 and 133125017.

It is not an unprimeable number, because it can be changed into a prime (133125049) 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 3 ways as a sum of consecutive naturals, for example, 831952 + ... + 832111.

Almost surely, 2^133125040 is an apocalyptic number.

133125040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133125040 is an abundant number, since it is smaller than the sum of its proper divisors (176390864).

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

133125040 is a wasteful number, since it uses less digits than its factorization.

133125040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1664076 (or 1664070 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 133125040 is about 11537.9824926198. The cubic root of 133125040 is about 510.6067877020.

Adding to 133125040 its reverse (40521331), we get a palindrome (173646371).

The spelling of 133125040 in words is "one hundred thirty-three million, one hundred twenty-five thousand, forty".