40424033 has 4 divisors (see below), whose sum is σ = 43533588. Its totient is φ = 37314480.

The previous prime is 40424009. The next prime is 40424051. The reversal of 40424033 is 33042404.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22344529 + 18079504 = 4727^2 + 4252^2 .

It is a cyclic number.

It is not a de Polignac number, because 40424033 - 2⁸ = 40423777 is a prime.

It is a super-3 number, since 3×40424033³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40423996 and 40424014.

It is not an unprimeable number, because it can be changed into a prime (40424233) 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 3 ways as a sum of consecutive naturals, for example, 1554758 + ... + 1554783.

It is an arithmetic number, because the mean of its divisors is an integer number (10883397).

Almost surely, 2^40424033 is an apocalyptic number.

It is an amenable number.

40424033 is a deficient number, since it is larger than the sum of its proper divisors (3109555).

40424033 is a wasteful number, since it uses less digits than its factorization.

40424033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3109554.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 40424033 is about 6357.9896980099. The cubic root of 40424033 is about 343.1994210746.

Adding to 40424033 its reverse (33042404), we get a palindrome (73466437).

The spelling of 40424033 in words is "forty million, four hundred twenty-four thousand, thirty-three".