133126945 has 16 divisors (see below), whose sum is σ = 182874240. Its totient is φ = 91137024.

The previous prime is 133126943. The next prime is 133126957. The reversal of 133126945 is 549621331.

It is a cyclic number.

It is not a de Polignac number, because 133126945 - 2¹ = 133126943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133126945.

It is not an unprimeable number, because it can be changed into a prime (133126943) 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, 21121 + ... + 26689.

It is an arithmetic number, because the mean of its divisors is an integer number (11429640).

Almost surely, 2^133126945 is an apocalyptic number.

It is an amenable number.

133126945 is a deficient number, since it is larger than the sum of its proper divisors (49747295).

133126945 is an equidigital number, since it uses as much as digits as its factorization.

133126945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6264.

The product of its digits is 19440, while the sum is 34.

The square root of 133126945 is about 11538.0650457518. The cubic root of 133126945 is about 510.6092232601.

The spelling of 133126945 in words is "one hundred thirty-three million, one hundred twenty-six thousand, nine hundred forty-five".