133126645 has 16 divisors (see below), whose sum is σ = 168583680. Its totient is φ = 100718464.

The previous prime is 133126639. The next prime is 133126657. The reversal of 133126645 is 546621331.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133126645 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3732 + ... + 16738.

It is an arithmetic number, because the mean of its divisors is an integer number (10536480).

Almost surely, 2^133126645 is an apocalyptic number.

It is an amenable number.

133126645 is a deficient number, since it is larger than the sum of its proper divisors (35457035).

133126645 is a wasteful number, since it uses less digits than its factorization.

133126645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13124.

The product of its digits is 12960, while the sum is 31.

The square root of 133126645 is about 11538.0520452978. The cubic root of 133126645 is about 510.6088397092.

Adding to 133126645 its reverse (546621331), we get a palindrome (679747976).

The spelling of 133126645 in words is "one hundred thirty-three million, one hundred twenty-six thousand, six hundred forty-five".