40000133 has 8 divisors (see below), whose sum is σ = 43386840. Its totient is φ = 36728320.

The previous prime is 40000123. The next prime is 40000159. The reversal of 40000133 is 33100004.

It can be written as a sum of positive squares in 4 ways, for example, as 5166529 + 34833604 = 2273^2 + 5902^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40000133 - 2¹⁶ = 39934597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40000123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27998 + ... + 29391.

It is an arithmetic number, because the mean of its divisors is an integer number (5423355).

Almost surely, 2^40000133 is an apocalyptic number.

It is an amenable number.

40000133 is a deficient number, since it is larger than the sum of its proper divisors (3386707).

40000133 is a wasteful number, since it uses less digits than its factorization.

40000133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57447.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 40000133 is about 6324.5658349012. The cubic root of 40000133 is about 341.9955683796.

Adding to 40000133 its reverse (33100004), we get a palindrome (73100137).

The spelling of 40000133 in words is "forty million, one hundred thirty-three", and thus it is an aban number.