133240445 has 48 divisors (see below), whose sum is σ = 187450560. Its totient is φ = 90574848.

The previous prime is 133240439. The next prime is 133240453. The reversal of 133240445 is 544042331.

It is not a de Polignac number, because 133240445 - 2²⁴ = 116463229 is a prime.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 690269 + ... + 690461.

It is an arithmetic number, because the mean of its divisors is an integer number (3905220).

Almost surely, 2^133240445 is an apocalyptic number.

It is an amenable number.

133240445 is a deficient number, since it is larger than the sum of its proper divisors (54210115).

133240445 is a wasteful number, since it uses less digits than its factorization.

133240445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 133240445 is about 11542.9825002033. The cubic root of 133240445 is about 510.7542920254.

Adding to 133240445 its reverse (544042331), we get a palindrome (677282776).

The spelling of 133240445 in words is "one hundred thirty-three million, two hundred forty thousand, four hundred forty-five".