40043033 has 4 divisors (see below), whose sum is σ = 40147968. Its totient is φ = 39938100.

The previous prime is 40042993. The next prime is 40043063. The reversal of 40043033 is 33034004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40043033 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40043063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51893 + ... + 52658.

It is an arithmetic number, because the mean of its divisors is an integer number (10036992).

Almost surely, 2^40043033 is an apocalyptic number.

It is an amenable number.

40043033 is a deficient number, since it is larger than the sum of its proper divisors (104935).

40043033 is a wasteful number, since it uses less digits than its factorization.

40043033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104934.

The product of its (nonzero) digits is 432, while the sum is 17.

The square root of 40043033 is about 6327.9564631878. The cubic root of 40043033 is about 342.1177877059.

Adding to 40043033 its reverse (33034004), we get a palindrome (73077037).

The spelling of 40043033 in words is "forty million, forty-three thousand, thirty-three".