40123133 has 8 divisors (see below), whose sum is σ = 42214200. Its totient is φ = 38085120.

The previous prime is 40123121. The next prime is 40123141. The reversal of 40123133 is 33132104.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 458329 + 39664804 = 677^2 + 6298^2 .

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 40123133 - 2⁸ = 40122877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40123183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11708 + ... + 14741.

It is an arithmetic number, because the mean of its divisors is an integer number (5276775).

Almost surely, 2^40123133 is an apocalyptic number.

It is an amenable number.

40123133 is a deficient number, since it is larger than the sum of its proper divisors (2091067).

40123133 is a wasteful number, since it uses less digits than its factorization.

40123133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26527.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 40123133 is about 6334.2823587207. The cubic root of 40123133 is about 342.3457539775.

Adding to 40123133 its reverse (33132104), we get a palindrome (73255237).

The spelling of 40123133 in words is "forty million, one hundred twenty-three thousand, one hundred thirty-three".